MYRG


Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementEquityComponents
us-gaap:SharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted
us-gaap:ChangeInAccountingEstimateByType

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:CostOfGoodsAndServicesSold

us-gaap:GrossProfit

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:InterestExpense

us-gaap:NetIncomeLoss
us-gaap:ChangeInAccountingEstimateByType

us-gaap:OperatingIncomeLoss
us-gaap:ChangeInAccountingEstimateByType
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ContractWithCustomerBasisOfPricing
us-gaap:ContractWithCustomerBasisOfPricing, us-gaap:StatementBusinessSegments
us-gaap:ContractWithCustomerSalesChannel, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments

us-gaap:Revenues

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:Assets
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementGeographical

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:OtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AmortizationOfIntangibleAssets

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

us-gaap:Goodwill
us-gaap:BusinessAcquisition
us-gaap:StatementBusinessSegments
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent

us-gaap:TaxesPayableCurrent

us-gaap:LongTermDebt
us-gaap:CreditFacility
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongtermDebtType

us-gaap:LongTermDebtNoncurrent
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:MinorityInterest

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue
us-gaap:TitleOfIndividual, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:MinorityInterest

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:ChangeInAccountingEstimateByType

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateStatedPercentage

us-gaap:EffectiveIncomeTaxRateContinuingOperations
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance
us-gaap:ChangeInAccountingEstimateByType
myrg:CostEstimateRevisionGrossMarginIncreaseDecreasePercentage
us-gaap:GuaranteeObligationsByNature
myrg:GuarantorObligationsExpectedCosts
myrg:NetPeriod
myrg:IncreaseDecreaseInAccruedLossProvision
myrg:NetPeriod
myrg:IncreaseDecreaseInContractReceivableRetainage
myrg:NetPeriod
myrg:IncreaseDecreaseInNetContractAssetsLiabilities
myrg:NetPeriod
myrg:RevenueFromContractWithCustomerIncreaseDecreaseInUnbilledReceivables
us-gaap:BusinessAcquisition, us-gaap:ContingentConsiderationByType
us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:ContractWithCustomerBasisOfPricing
us-gaap:ConcentrationRiskPercentage1
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:ContractWithCustomerBasisOfPricing, us-gaap:StatementBusinessSegments
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:ContractWithCustomerSalesChannel, us-gaap:StatementBusinessSegments

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:DeferredIncomeTaxesAndTaxCredits

us-gaap:Depreciation

us-gaap:EffectOfExchangeRateOnCash

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:IncreaseDecreaseInContractWithCustomerAsset
myrg:NetPeriod

us-gaap:IncreaseDecreaseInContractWithCustomerLiability
myrg:NetPeriod
myrg:NetPeriod
us-gaap:IncreaseDecreaseInDeferredRevenue

us-gaap:IncreaseDecreaseInInsuranceSettlementsReceivable

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities
myrg:NetPeriod
us-gaap:IncreaseDecreaseInPayablesToCustomers

us-gaap:IncreaseDecreaseInSelfInsuranceReserve

us-gaap:InvestmentIncomeInterest

us-gaap:LeaseCost
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LineOfCreditFacilityInterestRateDuringPeriod

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherNoncashIncomeExpense

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:ProceedsFromRepaymentsOfNotesPayable

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:RepaymentsOfNotesPayable

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:AwardType, us-gaap:GranteeStatus, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType, us-gaap:PlanName
us-gaap:PlanName
us-gaap:AwardType, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType, us-gaap:GranteeStatus, us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesOther
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueOther
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StockRepurchasedAndRetiredDuringPeriodShares

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue
us-gaap:StatementEquityComponents

us-gaap:VariableLeaseCost

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

myrg:AccruedPayrollAndIncentiveCompensationCurrent

myrg:AccruedUnionDuesAndBenefit

myrg:AggregateCostsIncurredOnUncompletedContractsAndEstimatedEarnings

myrg:BillingsToDate
us-gaap:BusinessAcquisition
myrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractWithCustomerAssetNetCurrent
us-gaap:BusinessAcquisition
myrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractWithCustomerLiabilityNetCurrent
us-gaap:BusinessAcquisition
myrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedExcludingIntangibleAssetNet
us-gaap:BusinessAcquisition
myrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOperatingLeaseLiabilityNoncurrent
us-gaap:BusinessAcquisition
myrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseLiabilityCurrent

myrg:ContractWithCustomerLiabilityExcludingProvisionForLossOnContractsCurrent

myrg:DeferredTaxAssetsOperatingLeaseLiabilities

myrg:DeferredTaxLiabilityRightOfUseOperatingLeaseAssets

myrg:LeaseLiability

myrg:LeaseLiabilityCurrent

myrg:LeaseLiabilityNoncurrent

myrg:LeaseLiabilityPaymentsDue

myrg:LeaseLiabilityPaymentsDueAfterYearFive

myrg:LeaseLiabilityPaymentsDueInTwelveMonths

myrg:LeaseLiabilityPaymentsDueNextTwelveMonths

myrg:LeaseLiabilityPaymentsDueYearFive

myrg:LeaseLiabilityPaymentsDueYearFour

myrg:LeaseLiabilityPaymentsDueYearThree

myrg:LeaseLiabilityPaymentsDueYearTwo

myrg:LeaseLiabilityPaymentsRemainderOfFiscalYear

myrg:LeaseLiabilityUndiscountedExcessAmount

myrg:LeaseObligationCurrent

myrg:LeaseObligationNoncurrent

myrg:LeaseObligationTotal

myrg:LesseeLiabilityToBePaidAfterYearFive

myrg:NetContractAssetsLiabilities

myrg:NetCostsAndEstimatedEarningsInExcessOfBillings

myrg:OperatingAndFinanceLeaseRightOfUseAsset
us-gaap:AwardType
myrg:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingAndExercisableOptionsWeightedAverageExercisePrice
us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

myrg:UnrecognizedTaxBenefitIncludingTaxInterestAccrued

us-gaap:AccountsReceivableGrossCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill

us-gaap:ConstructionContractorReceivableRetainage

us-gaap:ContractReceivableDueOneYearOrLess

us-gaap:ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss

us-gaap:ContractWithCustomerAssetAccumulatedAllowanceForCreditLossCurrent

us-gaap:ContractWithCustomerAssetNetCurrent
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtIssuanceCostsLineOfCreditArrangementsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsForeign

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBonuses

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesUndistributedForeignEarnings

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:AwardType

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseRightOfUseAsset
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:GoodwillGross
us-gaap:StatementBusinessSegments
us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsMaximumExposure

us-gaap:IncomeTaxesReceivable

us-gaap:InsuranceSettlementsReceivableCurrent

us-gaap:InsuranceSettlementsReceivableNoncurrent

us-gaap:IntangibleAssetsGrossExcludingGoodwill

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:FairValueByLiabilityClass, us-gaap:LongtermDebtType
us-gaap:LettersOfCreditOutstandingAmount
us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear
us-gaap:LossContingenciesByNatureOfContingency
us-gaap:LossContingencyAccrualAtCarryingValue

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherEmployeeRelatedLiabilitiesCurrent

us-gaap:OtherReceivablesGrossCurrent

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

us-gaap:ProvisionForLossOnContracts

us-gaap:PurchaseCommitmentRemainingMinimumAmountCommitted

us-gaap:RevenueRemainingPerformanceObligation
us-gaap:StatementBusinessSegments

us-gaap:SelfInsuranceReserveCurrent

us-gaap:SelfInsuranceReserveNoncurrent
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit
us-gaap:ShareRepurchaseProgram
us-gaap:StockRepurchaseProgramAuthorizedAmount1
us-gaap:ShareRepurchaseProgram
us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

us-gaap:UnbilledContractsReceivable

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Other Nonoperating Income Expense
Balance Sheet
Long Term Debt
Assets
Operating Lease Right Of Use Asset
Current Assets
Other Assets Current
NonCurrent Assets
Other Assets Noncurrent
Liabilities
Operating Lease Liability
Current Liabilities
Long Term Debt Current
Noncurrent Liabilities
Minority Interest
Stockholders Equity
Common Stock Value
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Gain Loss On Sale Of Property Plant Equipment
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Accumulated Amortization
AccountsReceivable
Allowance For Doubtful Accounts Receivable Current

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:CommonStockValue ▂▂▂▂▂▂▂▂▂▄▂▂▂▂▂▂▂▂▂▁▁▅▇████0.1680.1680.1670.1670.1670.1660.1660.1660.1660.1770.1650.1650.1650.1640.1630.1630.1630.1630.1620.1580.160.1870.1980.2060.2080.2070.206NANANA0.21NANANANANANANANANA0.201NA0.2NANA
 us-gaap:SharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock█▇▆▅▅▅▄▄▄▄▃▃▃▁▁16.86716.81716.73416.71916.70916.68516.64916.64716.64416.6116.56516.56416.56516.49216.465NANANA0.016333NANANA19.969NANANA20.792NANANA21.223NANANA20.747NANANA20.405NANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁17.12517.045NA16.88216.76516.742NA16.71416.70416.658NA16.6316.59216.52NA16.47416.50316.452NA16.17717.67919.634NA21.21421.21521.052NA21.52121.63121.513NA21.45221.39721.311NA21.18621.09421.087NA21.04120.97820.934NA20.77620.791
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁16.85416.76NA16.69816.68516.627NA16.61416.616.514NA16.49216.45516.321NA16.31416.31216.161NA15.80517.35419.321NA20.78820.7620.562NA20.98821.11521.036NA20.8620.78520.661NA20.4120.33820.3NA20.26520.05919.983NA19.91519.868
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount NANANA0.034NANANA0.03NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities myrg:TimeVestedStockAwardsNA0.048NANA0.0440.0NA0.00.00.068NA0.001NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:PerformanceShares▁█0.0170.042NANA0.110.03NA0.030.0730.073NA0.0020.0680.049NA0.0210.050.127NANANANANANANANANANA0.0850.085NANANA0.016906NA0.0120.12NANA0.0740.06NANANANA
us-gaap:EarningsPerShareBasic ██▇▇▅▄▅▄▃▃▄▃▃▃▅▂▁▁▃▃▂▁▂▂▃▃▅▃▃▂▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂1.261.191.091.040.80.60.770.620.430.450.650.480.420.350.830.320.080.070.490.390.320.10.290.30.390.350.680.40.360.30.470.390.450.330.470.420.460.30.290.210.190.230.300000000000000040.20.17
us-gaap:EarningsPerShareDiluted ██▇▇▅▄▅▄▃▃▄▃▃▃▅▂▁▁▃▃▂▁▂▂▃▃▅▃▃▂▃▃▃▂▃▃▃▂▂▂▂▂▂▂▂1.241.171.071.020.80.590.760.620.430.440.640.480.410.340.820.310.070.070.480.380.310.10.290.290.380.340.660.390.360.290.460.380.440.320.460.410.450.290.280.20.180.210.300000000000000040.190.16
 us-gaap:EarningsPerShareDiluted us-gaap:ChangeInAccountingEstimateByType us-gaap:ContractsAccountedForUnderPercentageOfCompletion█▆▁▅▆▆▃▆▄▅▂▅▆▆0.210.02-0.43-0.090.050.0-0.250.05-0.11-0.09-0.31999999999999995-0.090.01-0.01NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:ComprehensiveIncomeNetOfTax NANA18.57617.28713.34610.01912.72110.3567.0847.27610.787.9356.8515.62713.4975.3511.2891.1517.3146.1655.5321.9065.9156.2258.0667.17214.148.4047.741NANANANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest █▇▇▆▄▃▄▃▁▁▃▂▂▁21.63220.18118.57617.28713.34610.01912.72110.4626.2356.54310.9857.9376.8515.627NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CostOfGoodsAndServicesSold █▇▇▇▅▅▆▇▄▄▄▂▁▁▂▂▂568.551515.533531.526531.429451.746456.838502.153524.017405.613425.218398.954354.251301.046309.858336.607338.649328.668NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:GrossProfit ████▆▆▇▆▄▄▄▄▃▃▃▃▂▂▄▃▃▂▃▂▃▂▄▃▃▂▃▃▃▂▃▂▂▂▂▁▁▂▂▁▁81.02276.95376.44476.47261.30561.63268.92259.19743.16342.87647.39145.28638.6335.75336.89434.85327.51725.7441.94434.06331.43527.28132.61128.6231.73629.37442.08232.72430.52827.0833.83832.48331.25327.30332.91629.57230.06226.10324.62519.81319.53921.58921.80217.03616.713
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest █▇▇▆▄▃▄▃▁▁▃▂29.08226.9925.19723.83418.35214.00218.23614.2158.8249.16714.6910.844NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit █▇▇▇▆▅▆▅▄▄▅▅▅▄▁▅▄▃█▅▅▄▅▅▆▅█▆▆▅▆▆▆▆▆▆▇▅▅▄▄▅▅▄▄7.8637.0627.0476.5424.9674.075.4613.7542.4662.5473.8342.8852.7642.291-2.8644.1772.532-0.3598.1484.1683.3491.2494.0524.014.744.1958.1694.8834.6153.7395.5684.5915.6994.2555.6975.0355.8873.8093.4212.3042.1142.923.4071.8912.236
us-gaap:InterestExpense ▃▂▃▅▅▆▇█▅▅▅▄▃▃▃▃▃▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▁▁▁▁▁▁▂▂▁0.6780.4750.6221.1131.3151.5131.7272.1251.1681.2051.1341.0140.7830.7210.810.6850.5940.5140.4660.4080.2420.1830.1950.180.1870.1790.1880.1790.1770.1780.190.1750.1790.1830.0980.3680.2040.1820.0810.0930.160.210.2450.3980.208
us-gaap:NetIncomeLoss ██▇▇▅▄▅▄▃▃▄▃▃▃▅▂▁▁▃▃▃▁▃▃▃▃▆▄▃▃▄▃▄▃▄▄▄▃▃▂▂▂▃▂21.21919.92818.1517.29213.3859.93212.77510.3557.2077.35310.6517.9576.8355.64413.5795.1451.231.27.7986.1465.51.9875.8816.1758.0747.17214.1278.4047.7416.27210.0228.3159.4626.969.7718.7469.5356.215.864.2213.7174.56.0883.901NA
us-gaap:OperatingIncomeLoss █▇▇▇▆▅▆▅▃▃▅▄▃▃▄▄▂▁▅▄▃▂▃▃▄▄▆▄▄▃▅▄▅▄▅▄▅▃▃▂▂▃▃▂▂29.66527.41125.86624.92919.34216.40820.8817.2629.419.62617.41114.13710.3578.40714.05611.423.6020.4815.16611.1399.1423.30710.3019.91913.02411.59722.4713.40712.39510.13215.78613.07915.36211.3915.64114.23615.65710.2289.3856.6345.9877.6239.7496.2075.838
us-gaap:OtherComprehensiveIncomeLossNetOfTax █▇█▅▄▅▄▅▄▄▆▅▅▅▄▆▅▄▁▅▅▄▅▅▅▅▅▅▅0.4130.2530.426-0.005-0.0390.087-0.0540.001-0.123-0.0770.129-0.0220.016-0.017-0.0820.2060.059-0.049-0.4840.0190.032-0.0810.0340.05-0.0080.00.0130.00.0NANANANANANANANANANANANANANANANA
us-gaap:OtherNonoperatingIncomeExpense ▆▆▆▆▆▄▄▄▇▇▃▁▆▆▁▃▇▇█▅▆▆▅▇▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆0.080.041-0.050.0180.321-0.895-0.921-0.9220.5820.746-1.596-2.2940.0250.249-2.531-1.4130.7510.8741.246-0.417-0.0520.108-0.1750.438-0.031-0.058-0.0020.0020.1080.054-0.0120.002-0.0220.005-0.076-0.087-0.032-0.027-0.028-0.021-0.01-0.022-0.03-0.031-0.053
us-gaap:ProfitLoss █▇▇▆▄▃▄▃▁▁▃▂▂▁21.21919.92818.1517.29213.3859.93212.77510.4616.3586.6210.8567.9596.8355.644NANANANANANANANANANANANANANANANANANANANANANANANANANA3.717NANANA3.353
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▇▇▇▆▆▇▇▅▆▅▅▄▄▄▄▄▃▄▃▃▃▃▃▃▂▃▂▂▂▃▂▂▂▂▃▃▂▂▂▂▁▁▁▁649.573592.486607.97607.901513.051518.47571.075583.214448.776468.094446.345399.537339.676345.611373.501373.502356.185300.129343.66283.259261.934253.634271.184269.861276.488244.148250.979248.473228.877215.638254.581232.89213.916201.342247.763250.558260.41240.228234.263210.489185.31150.294155.136152.767140.285
us-gaap:Revenues █▇▇▇▆▆▇▇▅▆▅▅▄▄▄▄▄▃▄▃▃▃▃▃▃▂▃▂▂▂▃▂▂▂▂▃▃▂▂▂▂▁▁▁▁649.573592.486607.97607.901513.051518.47571.075583.214448.776468.094446.345399.537339.676345.611373.501373.502356.185300.129343.66283.259261.934253.634271.184269.861276.488244.148250.979248.473228.877215.638254.581232.89213.916201.342247.763250.558260.41240.228234.263210.489185.31150.294155.136152.767140.285
us-gaap:SellingGeneralAndAdministrativeExpense ████▆▇▇▆▅▅▄▄▄▄▃▃▃▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▂▁▁▁51.8949.64750.84751.44341.19945.04648.07641.66733.94432.98730.07931.2129.16828.2823.99423.81425.02425.77926.84523.20322.51723.85922.67318.97418.94718.59219.55119.28218.1116.87518.09119.57616.14416.00717.50315.63914.51515.91815.60213.52313.69813.95311.99511.02311.048
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:Assets ██▇█▇▇█▇▅▅▅▄▃▃▃▃▃▃▃▂▂▂▂▃▃▃▂▃▃▂▂▂▂▂▂▂▂▁▁▁▁1050.8331019.246995.8591018.911950.086993.2461007.871988.013806.695795.218748.755701.701615.594591.591603.788620.597569.857548.708573.495499.609471.675504.604524.925559.706562.431528.222520.086528.699533.46516.783525.422513.687476.768446.892466.348460.249444.769420.933412.568404.96384.813NA380.148NANA
us-gaap:Liabilities ▇▇▇▇▇███▅▅▅▄▃▃▃▄▃▃▃▂▂▁▁▂▂▁▁▂▂▁▂▂▁▁▁▂▁▁▁▁▁579.204570.782566.567610.307560.636618.26643.396637.441467.758463.744424.291388.955312.969298.163316.749348.037302.729284.814310.321250.936225.988199.586195.045218.452221.935198.971197.533217.388222.346214.306229.331229.522202.792183.249211.658217.017211.779198.381196.83195.706181.865NA187.439NANA
us-gaap:LiabilitiesAndStockholdersEquity ██▇█▇▇█▇▅▅▅▄▃▃▃▃▃▃▃▂▂▂▂▃▃▃▂▃▃▂▂▂▂▂▂▂▂▁▁▁▁1050.8331019.246995.8591018.911950.086993.2461007.871988.013806.695795.218748.755701.701615.594591.591603.788620.597569.857548.708573.495499.609471.675504.604524.925559.706562.431528.222520.086528.699533.46516.783525.422513.687476.768446.892466.348460.249444.769420.933412.568404.96384.813NA380.148NANA
us-gaap:StockholdersEquity █▇▇▆▆▅▅▅▄▄▄▄▃▃▃▃▃▂▂▂▂▄▄▅▅▄▄▄▄▃▃▃▃▂▂▂▂▁▁▁471.625448.46429.288408.6389.446374.982364.471350.568339.039330.727322.984311.471302.625293.428287.039272.56267.128263.894263.174248.673245.687305.018329.88341.254340.496329.251322.553311.311311.114302.477296.091284.165273.976263.643254.69243.232232.99222.552215.738209.254NANA192.709NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AssetsCurrent ██▇█▇▇▇▇▅▅▅▄▃▃▃▄▃▃▃▂▂▂▂▃▃▂▂▃▃▂▃▂▂▂▂▂▂▁▁▁▁691.329665.366636.684658.762594.916628.802639.184639.415513.379505.756475.634427.045383.522363.537379.736393.434338.162330.708357.591285.952253.958290.046303.367335.151336.54314.424313.501316.721322.661308.485323.949314.527280.536253.084278.4270.086258.45241.024235.951230.952214.471NA223.923NANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▇█▃▃▂▄▂▂▁▁▂▁▁▁▁▁▂▂▃▁▁▃▅▄▅▇█▇▆▆█▇▄▃▃▂▃▁▄▃▄▅▇▅▅68.32273.06922.66818.9469.99133.99712.3979.1454.3551.3387.5070.34.2031.7195.3431.68210.0266.93923.8460.5843.36326.03939.79730.42946.88461.8377.63664.60954.55254.37576.45462.89437.62921.28119.82516.59924.33.7534.01317.54735.40944.71362.62339.18144.94
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▇█▂▂▁▄▁▁68.32273.06922.66818.9469.99133.99712.3979.145NANA7.507NANANA5.343NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccountsReceivableNetCurrent █▇██▇▇█▇▆▆▅▅▅▅▅▅▄▄▄▃▂▃▃▃▃▂▂▂▃▃▃▃▃▂▃▃▂▂▂▂▁396.45373.524385.938400.998341.514349.189388.479375.599313.455297.967288.427291.583280.018256.364283.008274.249222.21222.549234.642185.454161.91172.815187.235193.065176.446156.924158.101160.406177.022173.344173.468181.148177.7159.349167.241164.44154.171155.329126.911137.00399.742NA107.172NANA
us-gaap:OtherAssetsCurrent ▄▄█▂▃▃▄▃▃▃▃▂▃▃▃▂▃▂▃▂▂▂▃▂▃▂▂▁▂▂▂▁▂▂▂▁▁▁▁▁▁12.51614.54828.8827.37610.00710.83212.8117.4410.6818.3798.8475.6847.5657.8828.5135.2798.2867.2758.2025.3836.7786.3687.9425.857.9736.7846.882.6835.5516.4956.2832.5724.2695.0974.3961.542.6793.3353.0711.5612.928NA3.719NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:PropertyPlantAndEquipmentGross NANA479.48NANANA458.209NANANA415.387NANANA379.475NANANA364.357NANANA342.253NANANA296.61NANANA258.61NANANA216.953NANANA181.523NANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:BuildingAndBuildingImprovementsNANA33.452NANANA29.747NANANA23.228NANANA22.718NANANA21.66NANANA21.401NANANA16.898NANANA16.082NANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LandNANA9.301NANANA9.301NANANA8.475NANANA7.733NANANA5.468NANANA5.782NANANA4.813NANANA4.36NANANA3.99NANANA3.99NANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:OfficeEquipmentNANA16.725NANANA15.944NANANA11.743NANANA8.964NANANA7.93NANANA6.442NANANA5.778NANANA5.117NANANA4.782NANANA3.429NANANANANANA
us-gaap:AmortizationOfIntangibleAssets ▄▄▄▄▇▇▆█▅▅▅▅▂▂▁▂▂▂▂▂▃▂▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂0.5780.5780.5770.5781.2031.2280.9611.4190.7350.7340.8640.7430.1190.117-0.0940.1950.210.1880.1950.1880.2920.2110.320.0840.0840.0830.0840.0830.0830.0840.0840.0840.0830.0840.0840.0840.0830.0840.0840.0840.0830.0840.0840.0840.083
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures ▇▆▅▇▅█▇▆▄▄▃▃▂▂▁4.583.6443.044.9723.1865.3914.7224.182.2222.3421.3241.8370.9080.7190.168NANANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Goodwill ▇▇▇▇▇▇▇▆▄▄▄█▁▁▁▁▁▁▁▁▁▁▁▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁66.0766.06766.06566.05566.05166.04366.0665.55756.59656.59256.58871.09946.98446.98846.99446.98146.78146.78146.78146.78146.78147.12447.12448.66748.91846.59946.59946.59946.59946.59946.59946.59946.59946.59946.59946.59946.59946.59946.59946.59946.599NA46.599NANA
 us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass us-gaap:TrademarksNANA28.466NANANA28.455NANANA19.533NANANA9.074NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▇▇▇▇▇███▄▄▅▃▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁50.22350.79351.36551.91852.48653.6754.9456.39331.81832.54233.26619.65910.59210.7210.85210.76911.1911.38511.56611.01711.20511.15111.3629.6149.6989.7829.8659.94910.03210.11510.19910.28310.36710.4510.53410.61810.70210.78510.86910.95311.037NA11.204NANA
us-gaap:FiniteLivedIntangibleAssetsNet NANA22.899NANANA26.485NANANA13.733NANANA1.778NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CustomerRelationshipsNANA22.467NANANA24.758NANANA12.31NANANA1.208NANANA1.676NANANA2.041NANANA1.309NANANA1.643NANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:TradeNamesNANA0.432NANANA0.477NANANA0.523NANANA0.57NANANA0.616NANANA0.695NANANA0.0NANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ▇▇▇▇████▅▆▁22.41321.72422.29122.6224.55523.91122.95822.96814.1316.2660.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▇▇██▇▇▆▆▄▄▄▅▆▆▆█▆▆▄▄▆▄▃▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▁▁3.9263.7984.2574.2333.8533.8843.6873.6882.4842.5912.8783.2753.5513.6173.6594.3993.5253.3762.6662.853.5152.5322.3941.381.4041.4321.4671.4621.5241.7071.7441.7941.8361.8741.9041.9171.9481.9781.9711.3681.384NA1.831NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:AccountsPayableCurrent █▇▆█▅▆▇█▆▆▅▄▃▃▃▄▄▂▃▂▂▂▂▂▂▁▁▁▂▁▂▁▁▁▂▃▂▂▂▁▁211.975192.241162.58205.601154.902174.278192.107206.879166.35170.352139.48123.9898.804105.042110.383119.172115.32491.04899.94285.86777.46780.48473.382.48690.54267.32962.24768.1573.30767.89679.60567.11664.27861.2384.48192.91586.89980.85373.92460.90758.447NA41.309NANA
us-gaap:ContractWithCustomerLiabilityCurrent ▇▇█▆▆▅▅▄▂▁▃136.987140.314158.396125.611128.702100.635105.48677.29353.58128.51958.534NANANA30.224NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LiabilitiesCurrent ██▇█▇▆▆▆▄▄▄▃▂▂▂▂▂▃▃▂▂▂▂▂▂▁▁▂▂▂▂▂▂▁▂▂▂▂▂▂▁469.879447.824443.4459.554403.534378.244396.814393.521304.1293.56283.805252.304206.722181.959188.564213.659202.79222.73228.314198.349187.136183.768179.737192.664195.982173.021171.588192.595197.336189.345204.379206.503179.925160.452188.893196.343191.195177.883176.797177.695153.237NA138.832NANA
us-gaap:LongTermDebtCurrent ▁▄▄▄▆▇█▆▆▃▃▂1.554.3814.3814.3187.1868.1278.7376.5526.8563.7423.6812.941NANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseLiabilityCurrent ██▇▇█▇▇▇▅▅▁7.1916.9866.6126.4686.8646.6036.2056.0683.8174.4010.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent NANA9.88NANANA9.218NANANA7.828NANANA6.148NANANA6.377NANANA5.303NANANA4.816NANANA4.925NANANA4.885NANANA5.317NANANANANANA
us-gaap:OtherLiabilitiesCurrent ▇▇▇█▇▅▅▆▄▅▅▅▃▃▃▃▂▃▃▂▂▂▂▂▂▂▂▃▂▂▂▂▂▂▂▂▂▂▂▁▁86.50679.40286.71895.2984.98264.70864.36476.34952.66961.40961.35860.02843.53642.56235.03837.44431.95636.72242.38228.10126.94324.92628.85628.62732.83633.55331.7436.55830.3631.14632.71133.17626.98826.01832.2433.6127.0828.01329.07820.00617.791NA17.974NANA
us-gaap:TaxesPayableCurrent NANA18.13NANANA6.79NANANA7.999NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:LongTermDebt ▁▂▂▄▄▇▇█▅▅▄▄8.78529.4229.4270.19481.968161.384165.824178.19106.479109.94689.79289.314NANA78.96NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ▁▂▂▃▄▇▇█▅▅▄▄▃▄▄▄▃▂▃7.23525.03925.03965.87674.782153.257157.087171.63899.623106.20486.11186.37357.80467.38178.9679.49744.87839.5859.07NANANA0.0NANANANANANANANANANANANANANANANANA10.0NA30.0NANA
us-gaap:DeferredIncomeTaxLiabilitiesNet ▄▃▃██▇▇▂▁▁▂18.83118.29518.33921.68421.51521.22720.94517.69417.35917.05217.398NANANA13.452NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterest ▁▁▁▁▁▁▁▁▁▅█▇0.0040.0040.0040.0040.0040.0040.0040.004-0.1020.7471.481.275NANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent █▇▇▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁22.01819.74218.6314.0792.0714.1093.3042.421.6331.4921.0570.4620.4640.9030.9190.4750.5050.5250.5390.8450.8620.8940.9261.0591.2241.2211.2161.0741.2911.2421.2331.351.3371.2671.2351.2581.231.1440.6790.5910.611NA0.636NANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▇▇▇▇████▅▆▁15.21114.78715.7316.2317.78817.42716.88417.08410.45611.60.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo ▄▁█▆6.4825.7367.4966.988NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree ▃▁█▇3.6012.9685.5025.048NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour ▃▁█▇1.6341.1322.7722.491NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive ▅▁█▅0.9620.7961.1270.976NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:StockholdersEquity █▇▇▆▆▅▅▅▄▄▄▄▃▃▃▃▃▂▂▂▂▄▄▅▅▄▄▄▄▃▃▃▃▂▂▂▂▁▁▁471.625448.46429.288408.6389.446374.982364.471350.568339.039330.727322.984311.471302.625293.428287.039272.56267.128263.894263.174248.673245.687305.018329.88341.254340.496329.251322.553311.311311.114302.477296.091284.165273.976263.643254.69243.232232.99222.552215.738209.254NANA192.709NANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest █▇▆▆▅▄▄▃▃▃▂▂▂▁▁471.629448.464429.292408.604389.45374.986364.475350.572338.937331.474324.464312.746302.626293.428287.039NANANA263.174NANANA329.88NANANANANANANANANANANANANANANANANA202.948NA192.709NANA
us-gaap:CommonStockValue ▂▂▂▂▂▂▂▂▂▄▂▂▂▂▂▂▂▂▂▁▁▅▇████0.1680.1680.1670.1670.1670.1660.1660.1660.1660.1770.1650.1650.1650.1640.1630.1630.1630.1630.1620.1580.160.1870.1980.2060.2080.2070.206NANANA0.21NANANANANANANANANA0.201NA0.2NANA
us-gaap:AdditionalPaidInCapitalCommonStock ▆▆▆▆▅▅▅▅▅▄▄▄▄▃▃▃▃▃▃▁▁▅▇██▅▅▅▇▇▇▆▆▆▅▅▅▅▄▄▄159.624157.995158.618156.461154.594153.477152.532151.35150.177148.938148.276147.543146.61144.26143.934142.952142.331140.386140.1132.917132.431151.95161.342167.153167.752150.649151.124154.008162.211161.315161.202159.299157.426156.555154.564152.878151.384150.481149.877149.332147.25NA145.149NANA
us-gaap:RetainedEarningsAccumulatedDeficit █▇▇▆▆▆▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▄▄▄▄▄▄▄▄▃▃▃▃▂▂▂▂▁▁▁▁311.144290.021270.48252.375235.083221.698212.219199.444189.089181.882174.736164.085156.15149.32143.241129.662125.057123.827123.345115.547113.064152.846168.224173.813172.504178.395171.223157.096148.692140.951134.679124.657116.342106.8899.9290.14981.40371.86865.65859.79855.577NA47.36NANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax █▆▄▁▂▂▁▂▂▂▃▂▂▂▂▃▁▁▁▄▄▄▅▄▄0.6890.2760.023-0.403-0.398-0.359-0.446-0.392-0.393-0.27-0.193-0.322-0.3-0.316-0.299-0.217-0.423-0.482-0.4330.0510.0320.0350.1160.0820.032NA0.0NANANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterest ▁▁▁▁▁▁▁▁▁▅█▇0.0040.0040.0040.0040.0040.0040.0040.004-0.1020.7471.481.275NANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▁1.9481.487NA1.6311.0931.08NA1.1081.2020.951NA1.0021.0580.42NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆█▇▆█▆▆▅▅▃▆▅▅▅▅▁▄▅▅29.17259.3946.54130.70362.6835.24333.15424.34615.604-8.20526.1213.40323.23322.03312.592-40.976.1213.0613.993NANANANANANANANANANANANANANANANANANANANANA0.448NANANA12.77
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇█▇███▇▁▇██▄▇▇████▇-12.98-6.38-15.603-10.018-7.037-8.268-17.321-89.873-17.224-9.079-9.903-57.707-12.17-13.423-4.394-3.975-9.067-9.065-18.724NANANANANANANANANANANANANANANANANANANANANA-10.372NANANA-5.469
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▅▃▄▁▄▄█▅▅▄▇▄▄▅▆▅▄▆-21.153-2.769-27.692-11.838-79.694-5.072-12.6670.3624.5911.064-8.9740.367-8.552-12.203-4.53337.1775.301-21.05628.822NANANANANANANANANANANANANANANANANANANANANA0.62NANANA0.519
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▃█▄▄▁▅▄▄▄▃▄-4.74750.4013.7228.955-24.00621.63.2524.793.017-6.1697.207NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:IncreaseDecreaseInAccountsPayable ▆▇▁█▃▃▄▅▄▇▇▄▄▄▄▅▇▄▅▅▄▅▄▄▆▅▄▄▅▄▆▅▅▃▄▅▅▅▆▅▆▄▅▅▅18.57429.198-50.67545.938-20.251-18.091-15.38210.632-10.97838.2233.734-3.936-6.08-3.765-6.654-0.55425.69-10.3336.35.862-2.8448.004-10.272-3.67415.4995.189-6.141-4.1717.204-14.19513.4562.0362.865-23.646-7.837.1765.5446.17713.6734.97222.273-5.8562.4951.2724.059
us-gaap:IncreaseDecreaseInAccountsReceivable ▅▃▃█▃▁▅▄▅▄▇▂▅▂▄▇▄▃▆▅▃▃▃▅▄▄▄▃▄▄▃▄▅▃▄▄▄▆▃▆▄▃▄▄▄22.69-12.592-15.77259.222-8.264-38.08912.3832.85915.0889.3840.39-22.56924.091-26.0419.13150.405-0.929-12.41729.25523.543-10.893-14.42-6.53616.6189.072-1.389-2.644-16.6163.678-0.124-7.683.44818.351-7.8922.80110.269-1.15828.418-10.09237.2617.886-15.3169.3425.75.779
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆█▇▆█▆▆▅▅▃▆▅▅▅▅▁▄▅▅29.17259.3946.54130.70362.6835.24333.15424.34615.604-8.20526.1213.40323.23322.03312.592-40.976.1213.0613.993NANANANANANANANANANANANANANANANANANANANANA0.448NANANA12.77
us-gaap:NetIncomeLoss ██▇▇▅▄▅▄▃▃▄▃▃▃▅▂▁▁▃▃▃▁▃▃▃▃▆▄▃▃▄▃▄▃▄▄▄▃▃▂▂▂▃▂21.21919.92818.1517.29213.3859.93212.77510.3557.2077.35310.6517.9576.8355.64413.5795.1451.231.27.7986.1465.51.9875.8816.1758.0747.17214.1278.4047.7416.27210.0228.3159.4626.969.7718.7469.5356.215.864.2213.7174.56.0883.901NA
us-gaap:ProfitLoss █▇▇▆▄▃▄▃▁▁▃▂▂▁21.21919.92818.1517.29213.3859.93212.77510.4616.3586.6210.8567.9596.8355.644NANANANANANANANANANANANANANANANANANANANANANANANANANA3.717NANANA3.353
us-gaap:ShareBasedCompensation █▆█▇▅▅▅▅▅▄▃▄▅▂▄▄▇▄▅▅▇▃▄▅▇▅▆▅▆▄▄▄▄▃▄▃▃▃▄▁▃▂▂▂▂1.9481.4871.8841.6311.0931.081.1421.1081.2020.9510.6851.0021.0580.420.8970.9191.6930.8671.1861.0491.7090.730.9941.1271.6671.0491.41.0741.3640.8330.9680.8930.9070.7510.8940.6880.6470.6941.030.1460.6060.3480.3930.3940.392
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇█▇███▇▁▇██▄▇▇████▇-12.98-6.38-15.603-10.018-7.037-8.268-17.321-89.873-17.224-9.079-9.903-57.707-12.17-13.423-4.394-3.975-9.067-9.065-18.724NANANANANANANANANANANANANANANANANANANANANA-10.372NANANA-5.469
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▆▃▇▄▃▄█▅█▄▅▅▆▆▂▂▄▄▃▂▃▁▁▆▆▇▁▄▅▅▅▄▄▅▂▅▅▃▃▅▄▅▄▂▂13.9667.03116.88510.5327.89.13818.47411.39318.059.91110.98111.70413.52214.4975.9344.31110.59610.0027.4235.7118.4683.7693.80413.06413.36916.3623.05310.75812.79312.44111.1859.6229.4612.4585.15511.66512.0998.338.1811.33810.60112.2239.8134.955.75
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▅▃▄▁▄▄█▅▅▄▇▄▄▅▆▅▄▆-21.153-2.769-27.692-11.838-79.694-5.072-12.6670.3624.5911.064-8.9740.367-8.552-12.203-4.53337.1775.301-21.05628.822NANANANANANANANANANANANANANANANANANANANANA0.62NANANA0.519
us-gaap:PaymentsForRepurchaseOfCommonStock ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂█▄▃▂▁▁▂▂▁▁▁▁0.7342.6180.2260.0010.00.4250.00.00.00.7780.00.0920.0170.9340.00.850.02.2080.08.52567.27225.68618.3426.0710.0293.145.8629.0350.7260.8240.00.019NANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType myrg:EquipmentNoteEight,us-gaap:NotesPayableToBanksNANA2.75e-06NA2.75e-082.75e-082.75e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType myrg:EquipmentNoteFive,us-gaap:NotesPayableToBanksNANA4.01e-06NA4.0099999999999995e-084.0099999999999995e-084.0099999999999995e-084.0099999999999995e-084.0099999999999995e-084.0099999999999995e-084.0099999999999995e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType myrg:EquipmentNoteFour,us-gaap:NotesPayableToBanksNANA4.02e-06NA4.02e-084.02e-084.02e-084.02e-084.02e-084.02e-084.02e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType myrg:EquipmentNoteNine,us-gaap:NotesPayableToBanksNANA3.01e-06NA3.01e-083.01e-083.01e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType myrg:EquipmentNoteOne,us-gaap:NotesPayableToBanksNANA4.16e-06NA4.1599999999999995e-084.1599999999999995e-084.1599999999999995e-084.1599999999999995e-084.1599999999999995e-084.1599999999999995e-084.1599999999999995e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType myrg:EquipmentNoteSeven,us-gaap:NotesPayableToBanksNANA3.09e-06NA3.09e-083.09e-083.09e-083.09e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType myrg:EquipmentNoteSix,us-gaap:NotesPayableToBanksNANA2.8900000000000003e-06NA2.8899999999999997e-082.8899999999999997e-082.8899999999999997e-082.8899999999999997e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType myrg:EquipmentNoteThree,us-gaap:NotesPayableToBanksNANA3.97e-06NA3.97e-083.97e-083.97e-083.97e-083.97e-083.97e-083.97e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType myrg:EquipmentNoteTwo,us-gaap:NotesPayableToBanksNANA4.23e-06NA4.2299999999999995e-084.2299999999999995e-084.2299999999999995e-084.2299999999999995e-084.2299999999999995e-084.2299999999999995e-084.2299999999999995e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312011-06-302010-12-31
Value168000.0168000.0167000.0167000.0167000.0166000.0166000.0166000.0166000.0177000.0165000.0165000.0165000.0164000.0163000.0163000.0163000.0163000.0162000.0158000.0160000.0187000.0198000.0206000.0208000.0207000.0206000.0210000.0201000.0200000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.1

Shares Outstanding

us-gaap:SharesOutstanding us-gaap:StatementEquityComponents

us-gaap:SharesOutstanding

us-gaap:CommonStock


Shares
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1616161616161616161616161616160.0163331920212020
Percentage of SharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value17171616161616161616161616161617192121212121212121212121212120202020
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value16161616161616161616161616161517192020202021212020202020202020191919
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2020-09-302019-09-30
Value34000.030000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

myrg:TimeVestedStockAwards


Antidilutive
Period End2021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-09-30
Value48000.044000.000068000.01000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount0.00.00.00.00.00.00.0

us-gaap:PerformanceShares


Antidilutive
Period End2021-06-302021-03-312020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312014-06-302014-03-312013-03-312012-09-302012-06-302011-09-302011-06-30
Value17000.042000.0110000.030000.030000.073000.073000.02000.068000.049000.021000.050000.0127000.085000.085000.016906.012000.0120000.074000.060000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount0.00.00.00.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1.261.191.091.040.80.60.770.620.430.450.650.480.420.350.830.320.080.070.490.390.320.10.290.30.390.350.680.40.360.30.470.390.450.330.470.420.460.30.290.210.190.230.30.20.17
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1.241.171.071.020.80.590.760.620.430.440.640.480.410.340.820.310.070.070.480.380.310.10.290.290.380.340.660.390.360.290.460.380.440.320.460.410.450.290.280.20.180.210.30.190.16
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarningsPerShareDiluted us-gaap:ChangeInAccountingEstimateByType

us-gaap:ContractsAccountedForUnderPercentageOfCompletion


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.210.02-0.43-0.090.050-0.250.05-0.11-0.09-0.32-0.090.01-0.01
Percentage of EarningsPerShareDiluted16.91.7-40.2-8.86.20.0-32.98.1-25.6-20.5-50.0-18.82.4-2.9

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value1817131012107.0847.276107.9356.8515.627135.3511.2891.1517.3146.1655.5321.9065.9156.2258.0667.172148.4047.741
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.12.82.61.92.21.81.61.62.42.02.01.63.61.40.40.42.12.22.10.82.22.32.92.95.63.43.4

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value21201817131012106.2356.543107.9376.8515.627
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.33.43.12.82.61.92.21.81.41.42.52.02.01.6

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value568515531531451456502524405425398354301309336338328
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax87.587.087.487.488.188.187.989.890.490.889.488.788.689.790.190.792.3

Gross Profit

us-gaap:GrossProfit

us-gaap:GrossProfit


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value817676766161685943424745383536342725413431273228312942323027333231273229302624191921211716
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.513.012.612.611.911.912.110.29.69.210.611.311.410.39.99.37.78.612.212.012.010.812.010.611.512.016.813.213.312.613.313.914.613.613.311.811.510.910.59.410.514.40.011.211.9

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value29262523181418148.8249.1671410
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.54.64.13.93.62.73.22.42.02.03.32.7

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value7.8637.0627.0476.5424.9674.075.4613.7542.4662.5473.8342.8852.7642.291-2.8644.1772.532-0.3598.1484.1683.3491.2494.0524.014.744.1958.1694.8834.6153.7395.5684.5915.6994.2555.6975.0355.8873.8093.4212.3042.1142.923.4071.8912.236
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.21.21.21.11.00.81.00.60.50.50.90.70.80.7-0.81.10.7-0.12.41.51.30.51.51.51.71.73.32.02.01.72.22.02.72.12.32.02.31.61.51.11.11.90.01.21.6

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value678000.0475000.0622000.01113000.01315000.01513000.01727000.02125000.01168000.01205000.01134000.01014000.0783000.0721000.0810000.0685000.0594000.0514000.0466000.0408000.0242000.0183000.0195000.0180000.0187000.0179000.0188000.0179000.0177000.0178000.0190000.0175000.0179000.0183000.098000.0368000.0204000.0182000.081000.093000.0160000.0210000.0245000.0398000.0208000.0
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.10.20.30.30.30.40.30.30.30.30.20.20.20.20.20.20.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.10.10.10.00.00.10.10.00.30.1

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value21191817139.93212107.2077.353107.9576.8355.644135.1451.231.27.7986.1465.51.9875.8816.1758.0747.172148.4047.7416.272108.3159.4626.969.7718.7469.5356.215.864.2213.7174.56.0883.901
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.33.43.02.82.61.92.21.81.61.62.42.02.01.63.61.40.30.42.32.22.10.82.22.32.92.95.63.43.42.93.93.64.43.53.93.53.72.62.52.02.03.00.02.6

us-gaap:NetIncomeLoss us-gaap:ChangeInAccountingEstimateByType

us-gaap:ContractsAccountedForUnderPercentageOfCompletion


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.60.4-7.3-1.50.90.0-4.20.8-1.9-1.5-5.4-1.60.2-0.2
Percentage of NetIncomeLoss17.02.0-40.2-8.76.70.0-32.97.7-26.4-20.4-50.7-20.12.9-3.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.1-1.2-0.20.20.0-0.70.1-0.4-0.3-1.2-0.40.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ContractsAccountedForUnderPercentageOfCompletion0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value29272524191620179.419.6261714108.40714113.6020.4815119.1423.307109.91913112213121015131511151415109.3856.6345.9877.6239.7496.2075.838
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.64.64.34.13.83.23.73.02.12.13.93.53.02.43.83.11.00.24.43.93.51.33.83.74.74.79.05.45.44.76.25.67.25.76.35.76.04.34.03.23.25.10.04.14.2

us-gaap:OperatingIncomeLoss us-gaap:ChangeInAccountingEstimateByType

us-gaap:ContractsAccountedForUnderPercentageOfCompletion


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value5.10.6-10.4-1.91.20.0-3.90.9-4.2-4.0-6.6-2.10.2-0.3
Percentage of OperatingIncomeLoss17.22.2-40.2-7.66.20.0-18.75.2-44.6-41.6-37.9-14.91.9-3.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.1-1.7-0.30.20.0-0.70.2-0.9-0.9-1.5-0.50.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ContractsAccountedForUnderPercentageOfCompletion0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302014-06-302014-03-312013-06-302013-03-31
Value-17.622-15.534-16.577-19.19-13.454-10.868-14.135-11.259-8.742-7.197-7.813-8.03
Percentage of OperatingIncomeLoss-59.4-56.7-64.1-77.0-69.6-66.2-67.7-65.2-70.5-71.0-50.9-70.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.7-2.6-2.7-3.2-2.6-2.1-2.5-1.9-3.8-3.3-3.7-4.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, myrg:CommercialAndIndustrial


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302014-06-302014-03-312013-06-302013-03-31
Value14147.245118.9589.31210104.3553.3671.4292.726
Percentage of OperatingIncomeLoss49.052.128.047.146.356.848.662.535.133.29.323.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.22.41.21.91.71.81.81.91.91.60.71.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments myrg:CommercialAndIndustrial0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, myrg:TransmissionAndDistribution


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302014-06-302014-03-312013-06-302013-03-31
Value322835322317241716132116
Percentage of OperatingIncomeLoss110.4104.6136.1129.9123.2109.5119.1102.7135.4137.8141.6146.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.04.85.85.34.63.54.43.07.36.510.28.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments myrg:TransmissionAndDistribution0.00.00.00.00.00.00.00.00.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value413000.0253000.0426000.0-5000.0-39000.087000.0-54000.01000.0-123000.0-77000.0129000.0-22000.016000.0-17000.0-82000.0206000.059000.0-49000.0-484000.019000.032000.0-81000.034000.050000.0-8000.0013000.000
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.1-0.0-0.00.0-0.00.0-0.0-0.00.0-0.00.0-0.0-0.00.10.0-0.0-0.10.00.0-0.00.00.0-0.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value413000.0253000.0-5000.0-39000.087000.01000.0-123000.0-77000.0-22000.016000.0-17000.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.0-0.0-0.00.00.0-0.0-0.0-0.00.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value413000.0253000.0-5000.0-39000.087000.01000.0-123000.0-77000.0-22000.016000.0-17000.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.0-0.0-0.00.00.0-0.0-0.0-0.00.0-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value80000.041000.0-50000.018000.0321000.0-895000.0-921000.0-922000.0582000.0746000.0-1596000.0-2294000.025000.0249000.0-2531000.0-1413000.0751000.0874000.01246000.0-417000.0-52000.0108000.0-175000.0438000.0-31000.0-58000.0-2000.02000.0108000.054000.0-12000.02000.0-22000.05000.0-76000.0-87000.0-32000.0-27000.0-28000.0-21000.0-10000.0-22000.0-30000.0-31000.0-53000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0-0.00.00.1-0.2-0.2-0.20.10.2-0.4-0.60.00.1-0.7-0.40.20.30.4-0.1-0.00.0-0.10.2-0.0-0.0-0.00.00.00.0-0.00.0-0.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.0-0.0-0.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-06-302010-06-30
Value21191817139.93212106.3586.62107.9596.8355.6443.7173.353
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.33.43.02.82.61.92.21.81.41.42.42.02.01.62.02.4

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:Parent


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value211917139.932107.2077.3537.9576.8355.644
Percentage of ProfitLoss100.0100.0100.0100.0100.099.0113.4111.1100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.33.42.82.61.91.81.61.62.02.01.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value211917139.932107.2077.3537.9576.8355.644
Percentage of ProfitLoss100.0100.0100.0100.0100.099.0113.4111.1100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.33.42.82.61.91.81.61.62.02.01.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value649592607607513518571583448468446399339345373373356300343283261253271269276244250248228215254232213201247250260240234210185150155152140
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ContractWithCustomerBasisOfPricing

myrg:TeContract


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value91848610483839811787857789
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.014.314.217.116.316.217.320.119.721.522.726.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax14.014.314.217.116.316.217.320.119.721.522.726.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax myrg:TeContract100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

myrg:UnitPriceContract


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value10810311911110381876863575755
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.717.519.618.320.215.715.311.814.214.316.816.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.717.519.618.320.215.715.311.814.214.316.816.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax myrg:UnitPriceContract100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FixedPriceContract


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value416379380374314339389378263214167168
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax64.164.162.661.761.265.568.164.959.153.749.448.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax64.164.162.661.761.265.568.164.959.153.749.448.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:FixedPriceContract100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherContract


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value332421171113-4.1861831423731
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.14.13.52.92.32.6-0.73.27.110.511.29.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax5.14.13.52.92.32.6-0.73.27.110.511.29.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OtherContract100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ContractWithCustomerBasisOfPricing, us-gaap:StatementBusinessSegments

myrg:TeContract, myrg:CommercialAndIndustrial


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value18141024211519327.1089.4318.9429.457
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.82.41.84.04.23.03.45.61.62.42.62.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.82.41.84.04.23.03.45.61.62.42.62.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax myrg:TeContract myrg:CommercialAndIndustrial100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

myrg:TeContract, myrg:TransmissionAndDistribution


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value737075796168798480766880
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.311.912.513.112.013.113.914.518.119.220.023.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.311.912.513.112.013.113.914.518.119.220.023.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax myrg:TeContract myrg:TransmissionAndDistribution100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

myrg:UnitPriceContract, myrg:CommercialAndIndustrial


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value18181722191812191214159.65
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.83.12.93.73.73.52.13.32.83.64.52.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.83.12.93.73.73.52.13.32.83.64.52.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax myrg:UnitPriceContract myrg:CommercialAndIndustrial100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

myrg:UnitPriceContract, myrg:TransmissionAndDistribution


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value8985101888463754951424145
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.814.416.714.616.512.213.28.511.510.712.313.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.814.416.714.616.512.213.28.511.510.712.313.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax myrg:UnitPriceContract myrg:TransmissionAndDistribution100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FixedPriceContract, myrg:CommercialAndIndustrial


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value2592272472481872182352201401329089
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.938.440.740.936.642.241.237.931.533.126.625.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.938.440.740.936.642.241.237.931.533.126.625.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:FixedPriceContract myrg:CommercialAndIndustrial100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FixedPriceContract, myrg:TransmissionAndDistribution


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value157151133126126121153157122827779
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.225.622.020.824.623.327.027.027.620.522.723.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.225.622.020.824.623.327.027.027.620.522.723.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:FixedPriceContract myrg:TransmissionAndDistribution100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherContract, myrg:CommercialAndIndustrial


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value261713127.8316.783-6.2311528202720
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.12.92.32.11.51.3-1.12.66.55.28.26.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.12.92.32.11.51.3-1.12.66.55.28.26.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OtherContract myrg:CommercialAndIndustrial100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherContract, myrg:TransmissionAndDistribution


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value6.347.437.5775.0594.1486.9072.0453.8922.526219.99110
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.01.31.20.80.81.30.40.70.65.32.93.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.01.31.20.80.81.30.40.70.65.32.93.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OtherContract myrg:TransmissionAndDistribution100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ContractWithCustomerSalesChannel, us-gaap:StatementBusinessSegments

myrg:MarketTypeDistribution, myrg:TransmissionAndDistribution


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value11510311011495879198751007581
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.817.518.218.918.616.916.117.016.925.322.123.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.817.518.218.918.616.916.117.016.925.322.123.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax myrg:MarketTypeDistribution myrg:TransmissionAndDistribution100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

myrg:MarketTypeElectricalConstruction, myrg:CommercialAndIndustrial


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value322277289308236259260288189177142129
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax49.746.847.650.746.150.045.549.442.444.342.037.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax49.746.847.650.746.150.045.549.442.444.342.037.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax myrg:MarketTypeElectricalConstruction myrg:CommercialAndIndustrial100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

myrg:MarketTypeTransmission, myrg:TransmissionAndDistribution


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value210211207185181171219196181121121134
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.535.734.230.435.333.138.433.640.730.435.838.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax32.535.734.230.435.333.138.433.640.730.435.838.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax myrg:MarketTypeTransmission myrg:TransmissionAndDistribution100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments

myrg:CommercialAndIndustrial


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value322277289308236259260288189177142129
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax49.746.847.650.746.150.045.549.442.444.342.037.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax49.746.847.650.746.150.045.549.442.444.342.037.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax myrg:CommercialAndIndustrial100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

myrg:TransmissionAndDistribution


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value326314318299276259311294257222196216
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.353.252.449.353.950.054.550.657.655.758.062.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.353.252.449.353.950.054.550.657.655.758.062.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax myrg:TransmissionAndDistribution100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments

country:CA, myrg:CommercialAndIndustrial


Revenue
Period End2021-03-312020-12-312020-09-302020-03-312019-12-312019-09-30
Value171919182322
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.23.23.54.23.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.23.23.54.23.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:CA myrg:CommercialAndIndustrial100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value649592607607513518571583448468446399339345373373356300343283261253271269276244250248228215254232213201247250260240234210185150155152140
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value514950514145484133323031292823232525262322232218181819191816181916161715141515131313111111
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.08.48.48.58.08.78.47.17.67.06.77.88.68.26.46.47.08.67.88.28.69.48.47.06.97.67.87.87.97.87.18.47.58.07.16.25.66.66.76.47.49.37.77.27.9

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1050101999510189509931007988806795748701615591603620569548573499471504524559562528520528533516525513476446466460444420412404384380
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Assetsus-gaap:
Period End2020-12-312019-12-31
Value312287
Percentage of Assets31.428.5
Percentage of Assets31.428.5
Percentage of Assets us-gaap:CorporateNonSegment100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, myrg:CommercialAndIndustrial


Assetsus-gaap:
Period End2020-12-312019-12-31
Value413414
Percentage of Assets41.641.1
Percentage of Assets41.641.1
Percentage of Assets us-gaap:OperatingSegments myrg:CommercialAndIndustrial100.0100.0

us-gaap:OperatingSegments, myrg:TransmissionAndDistribution


Assetsus-gaap:
Period End2020-12-312019-12-31
Value269306
Percentage of Assets27.130.4
Percentage of Assets27.130.4
Percentage of Assets us-gaap:OperatingSegments myrg:TransmissionAndDistribution100.0100.0

us-gaap:Assets us-gaap:StatementGeographical

country:CA


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-31
Value232420
Percentage of Assets2.32.52.7
Percentage of Assets2.32.52.7
Percentage of Assets country:CA100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value579570566610560618643637467463424388312298316348302284310250225199195218221198197217222214229229202183211217211198196195181187
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets55.156.056.959.959.062.263.864.558.058.356.755.450.850.452.556.153.151.954.150.247.939.637.239.039.537.738.041.141.741.543.644.742.541.045.447.247.647.147.748.347.349.3

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1050101999510189509931007988806795748701615591603620569548573499471504524559562528520528533516525513476446466460444420412404384380
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312009-12-312008-12-31
Value471448429408389374364350339330322311302293287272267263263248245305329341340329322311311302296284273263254243232222215209192174155
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets44.944.043.140.141.037.836.235.542.041.643.144.449.249.647.543.946.948.145.949.852.160.462.861.060.562.362.058.958.358.556.455.357.559.054.652.852.452.952.351.750.70.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value691665636658594628639639513505475427383363379393338330357285253290303335336314313316322308323314280253278270258241235230214223
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets65.865.363.964.762.663.363.464.763.663.663.560.962.361.562.963.459.360.362.457.253.857.557.859.959.859.560.359.960.559.761.761.258.856.659.758.758.157.357.257.055.758.9

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value687322189.99133129.1454.3551.3387.5070.34.2031.7195.3431.682106.939230.5843.363263930466177645454766237211916243.7534173544623944373742
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.57.22.31.91.13.41.20.90.50.21.00.00.70.30.90.31.81.34.20.10.75.27.65.48.311.714.912.210.210.514.612.27.94.84.33.65.50.98.24.39.20.016.50.00.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312017-12-31
Value687322189.99133129.1457.5075.343
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.57.22.31.91.13.41.20.91.00.9

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value39637338540034134938837531329728829128025628327422222223418516117218719317615615816017717317318117715916716415415512613799107
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets37.736.638.839.435.935.238.538.038.937.538.541.645.543.346.944.239.040.640.937.134.334.235.734.531.429.730.430.333.233.533.035.337.335.735.935.734.736.930.833.825.928.2

Other Assets Current

us-gaap:OtherAssetsCurrent

us-gaap:OtherAssetsCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1214287.3761010127.44108.3798.8475.6847.5657.8828.5135.2798.2867.2758.2025.3836.7786.3687.9425.857.9736.7846.882.6835.5516.4956.2832.5724.2695.0974.3961.542.6793.3353.0711.5612.9283.719
Percentage of OtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.21.42.90.71.11.11.30.81.31.11.20.81.21.31.40.91.51.31.41.11.41.31.51.01.41.31.30.51.01.31.20.50.91.10.90.30.60.80.70.40.81.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value479458415379364342296258216181
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets48.145.555.562.863.565.257.049.246.544.0

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:BuildingAndBuildingImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value3329232221211616
Percentage of PropertyPlantAndEquipmentGross7.06.55.66.05.96.35.76.2
Percentage of Assets3.43.03.13.83.84.13.23.1
Percentage of Assets us-gaap:BuildingAndBuildingImprovements0.00.00.00.00.00.00.00.0

us-gaap:Land


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value9.3019.3018.4757.7335.4685.7824.8134.363.993.99
Percentage of PropertyPlantAndEquipmentGross1.92.02.02.01.51.71.61.71.82.2
Percentage of Assets0.90.91.11.31.01.10.90.80.91.0
Percentage of Assets us-gaap:Land0.00.00.00.00.00.00.00.00.00.0

us-gaap:OfficeEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1615118.9647.936.4425.7785.1174.7823.429
Percentage of PropertyPlantAndEquipmentGross3.53.52.82.42.21.91.92.02.21.9
Percentage of Assets1.71.61.61.51.41.21.11.01.00.8
Percentage of Assets us-gaap:OfficeEquipment0.00.00.00.00.00.00.00.00.00.0

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value578000.0578000.0577000.0578000.01203000.01228000.0961000.01419000.0735000.0734000.0864000.0743000.0119000.0117000.0-94000.0195000.0210000.0188000.0195000.0188000.0292000.0211000.0320000.084000.084000.083000.084000.083000.083000.084000.084000.084000.083000.084000.084000.084000.083000.084000.084000.084000.083000.084000.084000.084000.083000.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures


Investments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value4580000.03644000.03040000.04972000.03186000.05391000.04722000.04180000.02222000.02342000.01324000.01837000.0908000.0719000.0168000.00
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.40.40.30.50.30.50.50.40.30.30.20.30.10.10.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-04-132015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value666666666666666556565671464646464646464646474748482.3214646464646464646464646464646464646
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.36.56.66.57.06.66.66.67.07.17.610.17.67.97.87.68.28.58.29.49.99.39.08.78.70.08.89.08.88.79.08.99.19.810.410.010.110.511.111.311.512.112.3

us-gaap:Goodwill us-gaap:BusinessAcquisition

myrg:CsiElectricalContractorsInc


Goodwillus-gaap:
Period End2020-12-312019-12-312019-07-15
Value9.4639.4638.962
Percentage of Goodwill14.314.30.0
Percentage of Assets1.00.90.0
Percentage of Assets myrg:CsiElectricalContractorsInc0.00.00.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

myrg:CommercialAndIndustrial


Goodwillus-gaap:
Period End2020-12-312019-12-312013-12-312012-12-312011-12-31
Value25256.5576.5576.557
Percentage of Goodwill39.139.114.114.114.1
Percentage of Assets2.62.61.21.41.6
Percentage of Assets myrg:CommercialAndIndustrial0.00.010.410.313.2

myrg:TransmissionAndDistribution


Goodwillus-gaap:
Period End2020-12-312019-12-312013-12-312012-12-312011-12-31
Value4040404040
Percentage of Goodwill60.960.985.985.985.9
Percentage of Assets4.04.07.68.69.7
Percentage of Assets myrg:TransmissionAndDistribution0.00.019.217.922.0

Indefinite Lived Intangible Assets Excluding Goodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:Trademarks


Indefinite
Period End2020-12-312019-12-312018-12-312017-12-31
Value2828199.074
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0100.0
Percentage of Assets2.92.82.61.5
Percentage of Assets us-gaap:Trademarks0.00.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value50505151525354563132331910101010111111111111119.6149.6989.7829.8659.9491010101010101010101010101111
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.85.05.25.15.55.45.55.73.94.14.42.81.71.81.81.72.02.12.02.22.42.22.21.71.71.91.91.91.92.01.92.02.22.32.32.32.42.62.62.72.92.9

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2020-12-312019-12-312018-12-312017-12-31
Value2226131.778
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0
Percentage of Assets2.32.61.80.3

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2224121.2081.6762.0411.3091.643
Percentage of FiniteLivedIntangibleAssetsNet98.193.589.667.90.00.00.00.0
Percentage of Assets2.32.51.60.20.30.40.30.3
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.0

us-gaap:TradeNames


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value0.4320.4770.5230.570.6160.6950.0
Percentage of FiniteLivedIntangibleAssetsNet1.91.83.832.10.00.00.0
Percentage of Assets0.00.00.10.10.10.10.0
Percentage of Assets us-gaap:TradeNames0.00.00.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value222122222423222214160.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets2.12.12.22.22.62.42.32.31.82.00.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value3926000.03798000.04257000.04233000.03853000.03884000.03687000.03688000.02484000.02591000.02878000.03275000.03551000.03617000.03659000.04399000.03525000.03376000.02666000.02850000.03515000.02532000.02394000.01380000.01404000.01432000.01467000.01462000.01524000.01707000.01744000.01794000.01836000.01874000.01904000.01917000.01948000.01978000.01971000.01368000.01384000.01831000.0
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.40.40.40.40.40.30.30.40.50.60.60.60.70.60.60.50.60.70.50.50.20.20.30.30.30.30.30.30.30.40.40.40.40.40.50.50.30.40.5

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value2111921622051541741922061661701391239810511011911591998577807382906762687367796764618492868073605841
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets20.218.916.320.216.317.519.120.920.621.418.617.716.117.818.319.220.216.617.417.216.415.914.014.716.112.712.012.913.713.115.213.113.513.718.120.219.519.217.915.015.210.9

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1361401581251281001057753285830
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.013.815.912.313.510.110.57.86.63.67.85.0

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value469447443459403378396393304293283252206181188213202222228198187183179192195173171192197189204206179160188196191177176177153138
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets44.743.944.545.142.538.139.439.837.736.937.936.033.630.831.234.435.640.639.839.739.736.434.234.434.832.833.036.437.036.638.940.237.735.940.542.743.042.342.943.939.836.5

Long Term Debt Current

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value1550000.04381000.04381000.04318000.07186000.08127000.08737000.06552000.06856000.03742000.03681000.02941000.00
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.10.40.40.40.80.80.90.70.80.50.50.40.0

us-gaap:LongTermDebtCurrent us-gaap:DebtInstrument, us-gaap:LongtermDebtType

myrg:MasterLoanAgreement, us-gaap:NotesPayableToBanks


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1550000.04381000.04381000.04318000.07186000.08127000.08737000.06552000.06856000.03742000.03681000.0
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.40.40.40.80.80.90.70.80.50.5
Percentage of Assets myrg:MasterLoanAgreement us-gaap:NotesPayableToBanks0.00.00.00.00.00.00.00.00.00.00.0

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value7191000.06986000.06612000.06468000.06864000.06603000.06205000.06068000.03817000.04401000.00
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.70.70.70.60.70.70.60.60.50.60.0

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value9880000.09218000.07828000.06148000.06377000.05303000.04816000.04925000.04885000.05317000.0
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.00.91.01.01.11.00.90.91.01.3

Other Liabilities Current

us-gaap:OtherLiabilitiesCurrent

us-gaap:OtherLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value867986958464647652616160434235373136422826242828323331363031323326263233272829201717
Percentage of OtherLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.27.88.79.48.96.56.47.76.57.78.28.67.17.25.86.05.66.77.45.65.74.95.55.15.86.46.16.95.76.06.26.55.75.86.97.36.16.77.04.94.64.7

Taxes Payable Current

us-gaap:TaxesPayableCurrent

us-gaap:TaxesPayableCurrent


Taxes
Period End2020-12-312019-12-312018-12-31
Value186.797.999
Percentage of TaxesPayableCurrent100.0100.0100.0
Percentage of Assets1.80.71.1

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value8.78529297081161165178106109898978
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.82.93.06.98.616.216.518.013.213.812.012.713.1

us-gaap:LongTermDebt us-gaap:CreditFacility

us-gaap:RevolvingCreditFacility


Long
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value38331011031255279586478
Percentage of LongTermDebt55.040.762.962.670.749.272.764.972.1100.0
Percentage of Assets3.83.510.210.312.86.510.07.89.213.1
Percentage of Assets us-gaap:RevolvingCreditFacility0.00.00.00.00.00.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

myrg:EquipmentNoteEight, us-gaap:NotesPayableToBanks


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value5.0115.5135.5136.0086.0086.4966.4960.0
Percentage of LongTermDebt57.018.718.78.67.34.03.90.0
Percentage of Assets0.50.50.60.60.60.70.60.0
Percentage of Assets myrg:EquipmentNoteEight us-gaap:NotesPayableToBanks0.00.00.00.00.00.00.00.0

myrg:EquipmentNoteNine, us-gaap:NotesPayableToBanks


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value3.7744.0314.0314.2854.5344.5344.5340.0
Percentage of LongTermDebt43.013.713.76.15.52.82.70.0
Percentage of Assets0.40.40.40.40.50.50.40.0
Percentage of Assets myrg:EquipmentNoteNine us-gaap:NotesPayableToBanks0.00.00.00.00.00.00.00.0

myrg:EquipmentNoteSeven, us-gaap:NotesPayableToBanks


Long
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value6.986.987.6758.3598.3599.0339.0330.0
Percentage of LongTermDebt23.723.710.910.25.25.45.10.0
Percentage of Assets0.70.70.80.90.80.90.90.0
Percentage of Assets myrg:EquipmentNoteSeven us-gaap:NotesPayableToBanks0.00.00.00.00.00.00.00.0

myrg:EquipmentNoteSix, us-gaap:NotesPayableToBanks


Long
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value121213131414150.0
Percentage of LongTermDebt43.843.819.416.68.98.68.40.0
Percentage of Assets1.31.31.31.41.41.41.50.0
Percentage of Assets myrg:EquipmentNoteSix us-gaap:NotesPayableToBanks0.00.00.00.00.00.00.00.0

myrg:MasterLoanAgreement, us-gaap:NotesPayableToBanks


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value8.78529293148596252543031
Percentage of LongTermDebt100.0100.0100.045.059.337.137.429.350.827.335.1
Percentage of Assets0.82.93.03.15.16.06.25.36.73.84.2
Percentage of Assets myrg:MasterLoanAgreement us-gaap:NotesPayableToBanks0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:LongtermDebtType

us-gaap:NotesPayableToBanks


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value8.785292931485962525430310.0
Percentage of LongTermDebt100.0100.0100.045.059.337.137.429.350.827.335.10.0
Percentage of Assets0.82.93.03.15.16.06.25.36.73.84.20.0
Percentage of Assets us-gaap:NotesPayableToBanks0.00.00.00.00.00.00.00.00.00.00.00.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312011-06-302010-12-31
Value7.23525256574153157171991068686576778794439590.010.030
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0
Percentage of Assets0.72.52.56.57.915.415.617.412.313.411.512.39.411.413.112.87.97.210.30.02.67.9

us-gaap:LongTermDebtNoncurrent us-gaap:DebtInstrument, us-gaap:LongtermDebtType

myrg:MasterLoanAgreement, us-gaap:NotesPayableToBanks


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value7.23525252741515345472627
Percentage of LongTermDebtNoncurrent100.0100.0100.041.455.333.733.926.647.424.832.3
Percentage of Assets0.72.52.52.74.45.25.34.65.93.33.7
Percentage of Assets myrg:MasterLoanAgreement us-gaap:NotesPayableToBanks0.00.00.00.00.00.00.00.00.00.00.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value181818212121201717171713
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.81.81.82.12.32.12.11.82.22.12.32.2

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value4000.04000.04000.04000.04000.04000.04000.04000.0-102000.0747000.01480000.01275000.00
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.00.00.00.00.00.00.00.0-0.00.10.20.20.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value2219184.0792.0714.1093.3042.421.6331.4921.0570.4620.4640.9030.9190.4750.5050.5250.5390.8450.8620.8940.9261.0591.2241.2211.2161.0741.2911.2421.2331.351.3371.2671.2351.2581.231.1440.6790.5910.6110.636
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.11.91.90.40.20.40.30.20.20.20.10.10.10.20.20.10.10.10.10.20.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.30.30.30.20.10.20.2

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value151415161717161710110.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.41.51.61.61.91.81.71.71.31.50.0

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value6482000.05736000.07496000.06988000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0
Percentage of Assets0.60.60.80.7

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value3601000.02968000.05502000.05048000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0
Percentage of Assets0.30.30.60.5

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value1634000.01132000.02772000.02491000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0
Percentage of Assets0.20.10.30.2

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value962000.0796000.01127000.0976000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0100.0100.0
Percentage of Assets0.10.10.10.1

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-30
Value22212222
Percentage of OperatingLeaseLiability100.0100.0100.0100.0
Percentage of Assets2.12.12.22.2

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value26252627292929271720
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.52.52.72.73.13.02.92.82.22.5

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue us-gaap:TitleOfIndividual, us-gaap:RelatedPartyTransactionsByRelatedParty

myrg:Employees, srt:Subsidiaries


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2.73.03.33.63.94.24.54.8
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue10.211.712.313.313.414.115.217.5
Percentage of Assets0.30.30.30.40.40.40.40.5
Percentage of Assets myrg:Employees srt:Subsidiaries0.00.00.00.00.00.00.00.0

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value4148000.03978000.04461000.04443000.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0
Percentage of Assets0.40.40.40.4

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312009-12-312008-12-31
Value471448429408389374364350339330322311302293287272267263263248245305329341340329322311311302296284273263254243232222215209192174155
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets44.944.043.140.141.037.836.235.542.041.643.144.449.249.647.543.946.948.145.949.852.160.462.861.060.562.362.058.958.358.556.455.357.559.054.652.852.452.952.351.750.70.00.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312011-06-302010-12-31
Value471448429408389374364350338331324312302293287263329202192
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets44.944.043.140.141.037.836.235.542.041.743.344.649.249.647.545.962.852.750.7

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value0.6890.2760.023-0.403-0.398-0.359-0.446-0.392-0.393-0.27-0.193-0.322-0.3-0.316-0.299-0.4330.116
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.10.0-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.20.0
Percentage of Assets0.10.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.0-0.10.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value159157158156154153152151150148148147146144143140161
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest33.835.236.938.339.740.941.843.244.344.945.747.248.449.250.153.248.9
Percentage of Assets15.215.515.915.416.315.515.115.318.618.719.821.023.824.423.824.430.7
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value0.1680.1680.1670.1670.1670.1660.1660.1660.1660.1770.1650.1650.1650.1640.1630.1620.198
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value0.0040.0040.0040.0040.0040.0040.0040.004-0.1020.7471.481.2750.00.00.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.0-0.00.20.50.40.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.0-0.00.10.20.20.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value471448429408389374364350339330322311302293287263329
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.099.899.599.6100.0100.0100.0100.0100.0
Percentage of Assets44.944.043.140.141.037.836.235.542.041.643.144.449.249.647.545.962.8
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value311290270252235221212199189181174164156149143123168
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest66.064.763.061.860.459.158.256.955.854.953.952.551.650.949.946.951.0
Percentage of Assets29.628.527.224.824.722.321.120.223.422.923.323.425.425.223.721.532.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312011-06-302010-12-31
Value168000.0168000.0167000.0167000.0167000.0166000.0166000.0166000.0166000.0177000.0165000.0165000.0165000.0164000.0163000.0163000.0163000.0163000.0162000.0158000.0160000.0187000.0198000.0206000.0208000.0207000.0206000.0210000.0201000.0200000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.1

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value159157158156154153152151150148148147146144143142142140140132132151161167167150151154162161161159157156154152151150149149147145
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets15.215.515.915.416.315.515.115.318.618.719.821.023.824.423.823.025.025.624.426.628.130.130.729.929.828.529.129.130.431.230.731.033.035.033.133.234.035.736.336.938.338.2

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value3112902702522352212121991891811741641561491431291251231231151131521681731721781711571481401341241161069990817165595547
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets29.628.527.224.824.722.321.120.223.422.923.323.425.425.223.720.921.922.621.523.124.030.332.031.130.733.832.929.727.927.325.624.324.423.921.419.618.317.115.914.814.412.5

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value689000.0276000.023000.0-403000.0-398000.0-359000.0-446000.0-392000.0-393000.0-270000.0-193000.0-322000.0-300000.0-316000.0-299000.0-217000.0-423000.0-482000.0-433000.051000.032000.035000.0116000.082000.032000.00
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.10.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.0-0.0-0.1-0.1-0.10.00.00.00.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value4000.04000.04000.04000.04000.04000.04000.04000.0-102000.0747000.01480000.01275000.00
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.00.00.00.00.00.00.00.0-0.00.10.20.20.0

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1948000.01487000.01631000.01093000.01080000.01108000.01202000.0951000.01002000.01058000.0420000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1948000.01487000.01631000.01093000.01080000.01108000.01202000.0951000.01002000.01058000.0420000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1948000.01487000.01631000.01093000.01080000.01108000.01202000.0951000.01002000.01058000.0420000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302010-06-30
Value295946306235332415-8.2052613232212-40.976.1213130.44812
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.510.07.75.112.26.85.84.23.5-1.85.93.46.86.43.4-11.01.74.44.10.29.1

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302010-06-30
Value-12980000.0-6380000.0-15603000.0-10018000.0-7037000.0-8268000.0-17321000.0-89873000.0-17224000.0-9079000.0-9903000.0-57707000.0-12170000.0-13423000.0-4394000.0-3975000.0-9067000.0-9065000.0-18724000.0-10372000.0-5469000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.0-1.1-2.6-1.6-1.4-1.6-3.0-15.4-3.8-1.9-2.2-14.4-3.6-3.9-1.2-1.1-2.5-3.0-5.4-5.6-3.9

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302010-06-30
Value-21.153-2.769-27.692-11.838-79.694-5.072-12.66704.5911-8.9740-8.552-12.203-4.533375.301-21.056280.620.519
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.3-0.5-4.6-1.9-15.5-1.0-2.212.11.02.4-2.010.1-2.5-3.5-1.210.01.5-7.08.40.30.4

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-4.747503.7228.955-24.006213.2524.793.017-6.1697.207
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.78.50.61.5-4.74.20.60.80.7-1.31.6

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1829-50.67545-20.251-18.091-15.38210-10.9783833-3.936-6.08-3.765-6.654-0.55425-10.3336.35.862-2.8448.004-10.272-3.674155.189-6.141-4.1717.204-14.195132.0362.865-23.646-7.837.1765.5446.177134.97222-5.8562.4951.2724.059
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value22-12.592-15.77259-8.264-38.089122.859159.3840-22.56924-26.0419.13150-0.929-12.4172923-10.893-14.42-6.536169.072-1.389-2.644-16.6163.678-0.124-7.683.44818-7.8922.80110-1.15828-10.092377.886-15.3169.3425.75.779
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302010-06-30
Value295946306235332415-8.2052613232212-40.976.1213130.44812
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.510.07.75.112.26.85.84.23.5-1.85.93.46.86.43.4-11.01.74.44.10.29.1

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value21191817139.93212107.2077.353107.9576.8355.644135.1451.231.27.7986.1465.51.9875.8816.1758.0747.172148.4047.7416.272108.3159.4626.969.7718.7469.5356.215.864.2213.7174.56.0883.901
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.33.43.02.82.61.92.21.81.61.62.42.02.01.63.61.40.30.42.32.22.10.82.22.32.92.95.63.43.42.93.93.64.43.53.93.53.72.62.52.02.03.03.92.6

us-gaap:NetIncomeLoss us-gaap:ChangeInAccountingEstimateByType

us-gaap:ContractsAccountedForUnderPercentageOfCompletion


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.60.4-7.3-1.50.90.0-4.20.8-1.9-1.5-5.4-1.60.2-0.2
Percentage of NetIncomeLoss17.02.0-40.2-8.76.70.0-32.97.7-26.4-20.4-50.7-20.12.9-3.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.1-1.2-0.20.20.0-0.70.1-0.4-0.3-1.2-0.40.1-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ContractsAccountedForUnderPercentageOfCompletion0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-06-302010-06-30
Value21191817139.93212106.3586.62107.9596.8355.6443.7173.353
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.33.43.02.82.61.92.21.81.41.42.42.02.01.62.02.4

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:Parent


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value211917139.932107.2077.3537.9576.8355.644
Percentage of ProfitLoss100.0100.0100.0100.0100.099.0113.4111.1100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.33.42.82.61.91.81.61.62.02.01.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value211917139.932107.2077.3537.9576.8355.644
Percentage of ProfitLoss100.0100.0100.0100.0100.099.0113.4111.1100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.33.42.82.61.91.81.61.62.02.01.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1948000.01487000.01884000.01631000.01093000.01080000.01142000.01108000.01202000.0951000.0685000.01002000.01058000.0420000.0897000.0919000.01693000.0867000.01186000.01049000.01709000.0730000.0994000.01127000.01667000.01049000.01400000.01074000.01364000.0833000.0968000.0893000.0907000.0751000.0894000.0688000.0647000.0694000.01030000.0146000.0606000.0348000.0393000.0394000.0392000.0
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302010-06-30
Value-12980000.0-6380000.0-15603000.0-10018000.0-7037000.0-8268000.0-17321000.0-89873000.0-17224000.0-9079000.0-9903000.0-57707000.0-12170000.0-13423000.0-4394000.0-3975000.0-9067000.0-9065000.0-18724000.0-10372000.0-5469000.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.0-1.1-2.6-1.6-1.4-1.6-3.0-15.4-3.8-1.9-2.2-14.4-3.6-3.9-1.2-1.1-2.5-3.0-5.4-5.6-3.9

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value137.03116107.89.1381811189.911101113145.9344.31110107.4235.7118.4683.7693.8041313163.053101212119.6229.46125.15511128.338.181110129.8134.955.75
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302010-06-30
Value-21.153-2.769-27.692-11.838-79.694-5.072-12.66704.5911-8.9740-8.552-12.203-4.533375.301-21.056280.620.519
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.3-0.5-4.6-1.9-15.5-1.0-2.212.11.02.4-2.010.1-2.5-3.5-1.210.01.5-7.08.40.30.4

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value0.7342.6180.2260.0010.00.4250.00.00.00.7780.00.0920.0170.9340.00.850.02.2080.08.5256725186.0710.0293.145.8629.0350.7260.8240.00.019
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.00.0100.00.00.00.0100.00.0100.0100.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateStatedPercentage

myrg:EquipmentNoteEight, us-gaap:NotesPayableToBanks


Debt
Period End2020-12-312020-06-302020-03-312019-12-31
Value2.750.02750.02750.0275
Percentage of DebtInstrumentInterestRateStatedPercentage100.0100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations myrg:EquipmentNoteEight us-gaap:NotesPayableToBanks0.00.00.00.0

myrg:EquipmentNoteFive, us-gaap:NotesPayableToBanks


Debt
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4.010.04010.04010.04010.04010.04010.04010.0401
Percentage of DebtInstrumentInterestRateStatedPercentage145.8145.8145.8145.80.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations myrg:EquipmentNoteFive us-gaap:NotesPayableToBanks0.00.00.00.00.00.00.00.0

myrg:EquipmentNoteFour, us-gaap:NotesPayableToBanks


Debt
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4.020.04020.04020.04020.04020.04020.04020.0402
Percentage of DebtInstrumentInterestRateStatedPercentage146.2146.2146.2146.20.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations myrg:EquipmentNoteFour us-gaap:NotesPayableToBanks0.00.00.00.00.00.00.00.0

myrg:EquipmentNoteNine, us-gaap:NotesPayableToBanks


Debt
Period End2020-12-312020-06-302020-03-312019-12-31
Value3.010.03010.03010.0301
Percentage of DebtInstrumentInterestRateStatedPercentage109.5109.5109.5109.5
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations myrg:EquipmentNoteNine us-gaap:NotesPayableToBanks0.00.00.00.0

myrg:EquipmentNoteOne, us-gaap:NotesPayableToBanks


Debt
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4.160.04160.04160.04160.04160.04160.04160.0416
Percentage of DebtInstrumentInterestRateStatedPercentage151.3151.3151.3151.30.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations myrg:EquipmentNoteOne us-gaap:NotesPayableToBanks0.00.00.00.00.00.00.00.0

myrg:EquipmentNoteSeven, us-gaap:NotesPayableToBanks


Debt
Period End2020-12-312020-06-302020-03-312019-12-312019-09-30
Value3.090.03090.03090.03090.0309
Percentage of DebtInstrumentInterestRateStatedPercentage112.4112.4112.4112.40.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations myrg:EquipmentNoteSeven us-gaap:NotesPayableToBanks0.00.00.00.00.0

myrg:EquipmentNoteSix, us-gaap:NotesPayableToBanks


Debt
Period End2020-12-312020-06-302020-03-312019-12-312019-09-30
Value2.890.02890.02890.02890.0289
Percentage of DebtInstrumentInterestRateStatedPercentage105.1105.1105.1105.10.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations myrg:EquipmentNoteSix us-gaap:NotesPayableToBanks0.00.00.00.00.0

myrg:EquipmentNoteThree, us-gaap:NotesPayableToBanks


Debt
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3.970.03970.03970.03970.03970.03970.03970.0397
Percentage of DebtInstrumentInterestRateStatedPercentage144.4144.4144.4144.40.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations myrg:EquipmentNoteThree us-gaap:NotesPayableToBanks0.00.00.00.00.00.00.00.0

myrg:EquipmentNoteTwo, us-gaap:NotesPayableToBanks


Debt
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4.230.04230.04230.04230.04230.04230.04230.0423
Percentage of DebtInstrumentInterestRateStatedPercentage153.8153.8153.8153.80.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations myrg:EquipmentNoteTwo us-gaap:NotesPayableToBanks0.00.00.00.00.00.00.00.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value27.026.20.127.40.2710.2910.010.2640.2790.278-0.0070.2660.2880.289-0.3150.4480.6730.4270.050.4040.378
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value22.9422.2622.3321.9219.82
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value182017131814129.1698.7886.101
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2723129.165141516181718
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-312010-12-31
Value500000.0400000.0353000.0400000.0200000.0200000.0152000.0200000.0300000.0400000.0327000.0787000.0300000.0300000.0300000.0270000.0600000.0600000.0600000.0425000.0700000.0800000.0800000.0507000.0700000.0900000.0900000.0657000.0900000.01000000.0800000.0655000.0567000.0392000.0
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value2566000.02508000.02672000.02173000.0595000.00
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.00.0

myrg:CostEstimateRevisionGrossMarginIncreaseDecreasePercentage us-gaap:ChangeInAccountingEstimateByType

myrg:CostEstimateRevisionGrossMarginIncreaseDecreasePercentage

us-gaap:ContractsAccountedForUnderPercentageOfCompletion


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.80.1-0.4-0.30.0020.001-0.0030.002-0.009-0.008-0.003-0.0060.001-0.001
Percentage of CostEstimateRevisionGrossMarginIncreaseDecreasePercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

myrg:GuarantorObligationsExpectedCosts us-gaap:GuaranteeObligationsByNature

myrg:GuarantorObligationsExpectedCosts

us-gaap:PerformanceGuarantee


Guarantor
Period End2021-06-302021-03-312020-12-31
Value-27.4632-31.1
Percentage of GuarantorObligationsExpectedCosts100.0100.0100.0

myrg:IncreaseDecreaseInAccruedLossProvision myrg:NetPeriod

myrg:IncreaseDecreaseInAccruedLossProvision

myrg:NetPeriodChange


Increase
Period End2021-06-302021-03-312020-12-31
Value659000.0-692000.0516000.0
Percentage of IncreaseDecreaseInAccruedLossProvision100.0100.0100.0

myrg:IncreaseDecreaseInContractReceivableRetainage myrg:NetPeriod

myrg:IncreaseDecreaseInContractReceivableRetainage

myrg:NetPeriodChange


Increase
Period End2021-06-302021-03-312020-12-31
Value6531000.0-3645000.0-4546000.0
Percentage of IncreaseDecreaseInContractReceivableRetainage100.0100.0100.0

myrg:IncreaseDecreaseInNetContractAssetsLiabilities myrg:NetPeriod

myrg:IncreaseDecreaseInNetContractAssetsLiabilities

myrg:NetPeriodChange


Increase
Period End2021-06-302021-03-312020-12-31
Value7.31725-68.573
Percentage of IncreaseDecreaseInNetContractAssetsLiabilities100.0100.0100.0

myrg:RevenueFromContractWithCustomerIncreaseDecreaseInUnbilledReceivables myrg:NetPeriod

myrg:RevenueFromContractWithCustomerIncreaseDecreaseInUnbilledReceivables

myrg:NetPeriodChange


Revenue
Period End2021-06-302021-03-312020-12-31
Value-2.54110-31.242
Percentage of RevenueFromContractWithCustomerIncreaseDecreaseInUnbilledReceivables100.0100.0100.0

us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1 us-gaap:BusinessAcquisition, us-gaap:ContingentConsiderationByType

us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1

myrg:CSIElectricalContractorsInc, myrg:CertainPerformanceTargetsAndContinuedEmploymentOfKeyExecutives


Business
Period End2020-09-30
Value1400000.0
Percentage of BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:ContractWithCustomerBasisOfPricing

us-gaap:ConcentrationRiskPercentage1

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, myrg:TeContract


Concentration
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value14.114.317.116.316.220.1
Percentage of ConcentrationRiskPercentage1100.0100.0100.0100.0100.0100.0

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, myrg:UnitPriceContract


Concentration
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value16.717.518.320.215.711.8
Percentage of ConcentrationRiskPercentage1118.4122.4107.0123.996.958.7

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, us-gaap:FixedPriceContract


Concentration
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value64.164.161.761.265.564.9
Percentage of ConcentrationRiskPercentage1454.6448.3360.8375.5404.3322.9

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, us-gaap:OtherContract


Concentration
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value5.14.12.92.32.63.2
Percentage of ConcentrationRiskPercentage136.228.717.014.116.015.9

us-gaap:ConcentrationRiskPercentage1 us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:ContractWithCustomerBasisOfPricing, us-gaap:StatementBusinessSegments

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, myrg:TeContract, myrg:CommercialAndIndustrial


Concentration
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value5.65.27.99.26.111.4
Percentage of ConcentrationRiskPercentage139.736.446.256.437.756.7

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, myrg:TeContract, myrg:TransmissionAndDistribution


Concentration
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value22.422.326.622.326.228.6
Percentage of ConcentrationRiskPercentage1158.9155.9155.6136.8161.7142.3

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, myrg:UnitPriceContract, myrg:CommercialAndIndustrial


Concentration
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value5.76.67.38.17.06.8
Percentage of ConcentrationRiskPercentage140.446.242.749.743.233.8

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, myrg:UnitPriceContract, myrg:TransmissionAndDistribution


Concentration
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value27.527.129.630.624.416.7
Percentage of ConcentrationRiskPercentage1195.0189.5173.1187.7150.683.1

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, us-gaap:FixedPriceContract, myrg:CommercialAndIndustrial


Concentration
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value80.382.080.779.484.376.6
Percentage of ConcentrationRiskPercentage1569.5573.4471.9487.1520.4381.1

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, us-gaap:FixedPriceContract, myrg:TransmissionAndDistribution


Concentration
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value48.248.242.245.746.753.4
Percentage of ConcentrationRiskPercentage1341.8337.1246.8280.4288.3265.7

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, us-gaap:OtherContract, myrg:CommercialAndIndustrial


Concentration
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value8.46.24.13.32.65.2
Percentage of ConcentrationRiskPercentage159.643.424.020.216.025.9

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, us-gaap:OtherContract, myrg:TransmissionAndDistribution


Concentration
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value1.92.41.61.42.71.3
Percentage of ConcentrationRiskPercentage113.516.89.48.616.76.5

us-gaap:ConcentrationRiskPercentage1 us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:ContractWithCustomerSalesChannel, us-gaap:StatementBusinessSegments

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, myrg:MarketTypeDistribution, myrg:TransmissionAndDistribution


Concentration
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value17.817.518.918.616.917.0
Percentage of ConcentrationRiskPercentage1126.2122.4110.5114.1104.384.6

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, myrg:MarketTypeElectricalConstruction, myrg:CommercialAndIndustrial


Concentration
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value49.746.850.746.150.049.4
Percentage of ConcentrationRiskPercentage1352.5327.3296.5282.8308.6245.8

us-gaap:SalesRevenueNet, us-gaap:ProductConcentrationRisk, myrg:MarketTypeTransmission, myrg:TransmissionAndDistribution


Concentration
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value32.535.730.435.333.133.6
Percentage of ConcentrationRiskPercentage1230.5249.7177.8216.6204.3167.2

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice

us-gaap:ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-8.014-4.4-21.03.7364.89.7146.8-5.42.1-9.416
Percentage of ContractWithCustomerLiabilityCumulativeCatchUpAdjustmentToRevenueChangeInEstimateOfTransactionPrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value224114311625-0.2114.449-16.0352025
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxesAndTaxCredits

us-gaap:DeferredIncomeTaxesAndTaxCredits


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value528000.0-47000.0-3353000.0175000.0301000.0236000.03263000.0316000.0338000.0-315000.03307000.019000.0275000.048000.0
Percentage of DeferredIncomeTaxesAndTaxCredits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Depreciation

us-gaap:Depreciation


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value10111010101010109.8999.8159.9199.5619.3159.2759.1719.8519.4979.5589.4899.569.4829.7059.6919.6159.2718.8818.5388.4488.1537.957.6577.2587.0666.8796.6546.426.0475.75.3824.984.5674.2474.2373.9693.809
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCash

us-gaap:EffectOfExchangeRateOnCash


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value214000.0160000.0476000.0108000.045000.0-303000.079000.0-45000.047000.051000.0-40000.034000.0-27000.0-31000.0-4000.0-576000.0733000.0154000.0-829000.0-3000.058000.0000
Percentage of EffectOfExchangeRateOnCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestExpense


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1000.03000.04000.07000.09000.011000.013000.016000.017000.020000.0
Percentage of FinanceLeaseInterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value103000.0273000.0324000.0298000.0304000.0312000.0344000.0282000.0345000.0230000.0272000.0
Percentage of FinanceLeasePrincipalPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAmortization

us-gaap:FinanceLeaseRightOfUseAssetAmortization


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value186000.0189000.0146000.0240000.0247000.0249000.00273000.0274000.0273000.0
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GainLossOnSaleOfPropertyPlantEquipment


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1111000.0683000.0846000.0478000.0439000.01050000.0995000.01151000.0926000.0471000.0963000.0804000.01014000.01051000.01062000.0576000.01319000.0707000.0262000.0467000.0516000.096000.0683000.0357000.0319000.0898000.023000.048000.060000.011000.0123000.0256000.0336000.0178000.0312000.0387000.0193000.0127000.0446000.0428000.0229000.071000.026000.0278000.0256000.0
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerAsset

us-gaap:IncreaseDecreaseInContractWithCustomerAsset


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.8646.991-36.114-2.9040.1917.467-22.46724-13.39727-12.038251.71812
Percentage of IncreaseDecreaseInContractWithCustomerAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerAsset myrg:NetPeriod

myrg:NetPeriodChange


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.997.08-35.788-2.6840.5576.609-21.38363-13.26427
Percentage of IncreaseDecreaseInContractWithCustomerAsset103.3101.399.192.4291.688.595.2257.999.0100.6

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInContractWithCustomerLiability


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-3.346-18.08732-3.1127-4.697284.63824-30.03313-8.8729-12.333
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability myrg:NetPeriod

myrg:NetPeriodChange


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-3.327-18.08232-3.09128-4.851282325-30.015
Percentage of IncreaseDecreaseInContractWithCustomerLiability99.4100.0100.199.4100.4103.398.7511.3100.399.9

us-gaap:IncreaseDecreaseInDeferredRevenue myrg:NetPeriod

us-gaap:IncreaseDecreaseInDeferredRevenue

myrg:NetPeriodChange


Increase
Period End2021-06-302021-03-312020-12-31
Value-3.986-17.3932
Percentage of IncreaseDecreaseInDeferredRevenue100.0100.0100.0

us-gaap:IncreaseDecreaseInInsuranceSettlementsReceivable

us-gaap:IncreaseDecreaseInInsuranceSettlementsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value498000.0-802000.04614000.01831000.0-5688000.0754000.011272000.0-1058000.0610000.0-1178000.05463000.03436000.040000.0290000.0-253000.0193000.052000.047000.05547000.0-69000.04442000.0-2733000.0-101000.0-81000.0-789000.0-50000.0438000.0-866000.0655000.0695000.0-80000.0192000.0-64000.0-38000.097000.01401000.0-61000.0-180000.0986000.0-35000.0786000.0-37000.076000.0-49000.0-57000.0
Percentage of IncreaseDecreaseInInsuranceSettlementsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value4.925-15.314220.124-2.003-5.1959.556-2.7812.7030.8490.649-0.785-0.739-1.4052.298-0.7110.3370.2893.278-7.5682.606-2.0464.4-1.8195.211-2.1583.694-2.2330.87-1.0762.9330.286-0.742-0.3393.998-1.135-0.654-0.590.664-2.6561.674-3.2412.584-1.341-1.364
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value8.885-6.2385.89712181.283-10.45110-11.7453.576-9.3139.4550.3119.666-2.0045.212-4.631-5.67911-0.5176.304-5.755-0.049-5.213-1.942.379-3.925.25-2.5730.255-0.5826.201-0.379-4.771-1.4156.617-2.9121.4289.162.195-0.9830.6060.6780.504-2.06
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPayablesToCustomers myrg:NetPeriod

us-gaap:IncreaseDecreaseInPayablesToCustomers

myrg:NetPeriodChange


Increase
Period End2021-06-302021-03-312020-12-31
Value-3.327-18.08232
Percentage of IncreaseDecreaseInPayablesToCustomers100.0100.0100.0

us-gaap:IncreaseDecreaseInSelfInsuranceReserve

us-gaap:IncreaseDecreaseInSelfInsuranceReserve


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2.154-0.2855.2673.586-5.766-0.077130.334-0.112-0.585.0333.9070.618-0.8570.139-0.1190.9111.8345.318-0.5154.192-3.3780.771-0.613-1.823-0.9510.061-0.850.5350.623-0.082-0.4780.126-0.038-0.0461.2910.135-0.6471.0072.7970.9130.0890.21-0.2370.676
Percentage of IncreaseDecreaseInSelfInsuranceReserve100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value15000.013000.03000.004000.02000.04000.000011000.013000.000003000.01000.0001000.04000.02000.08000.08000.07000.016000.057000.030000.03000.06000.0003000.01000.001000.05000.05000.014000.021000.014000.012000.0
Percentage of InvestmentIncomeInterest100.0100.0100.00.0100.0100.0100.00.00.00.0100.0100.00.00.00.00.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2.7342.7542.7292.682.6282.5622.3652.4111.831.967
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityInterestRateDuringPeriod us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LineOfCreditFacilityInterestRateDuringPeriod

myrg:CreditAgreement, us-gaap:SecuredDebt


Line
Period End2020-12-31
Value-0.01
Percentage of LineOfCreditFacilityInterestRateDuringPeriod100.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2469000.02486000.02503000.02327000.02296000.02231000.02266000.02055000.01472000.01594000.0
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2529000.02540000.02561000.02341000.02266000.02069000.02273000.02121000.01264000.01679000.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value413000.0253000.0426000.0-5000.0-39000.087000.0-54000.01000.0-123000.0-77000.0129000.0-22000.016000.0-17000.0-82000.0206000.059000.0-49000.0-484000.019000.032000.0-81000.034000.050000.0-8000.0013000.000
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-841000.0-529000.0-1297000.0-387000.0-572000.0305000.0-398000.0152000.0-839000.056000.0460000.0-343000.0348000.0-702000.0-81000.0-1402000.0196000.093000.0-232000.0113000.0-136000.061000.0-25000.0-86000.0-27000.0-62000.0
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302015-12-312015-09-302014-12-312014-09-302013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-30
Value0.00.012130.0110.0260.0230.0240.0248.4-8.364-9.1859.2130.010.0-3.693.690.00.00.00.00.00.00.00.00.0560.00.00.0380.00.00.045
Percentage of ProceedsFromPaymentsForOtherFinancingActivities0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.00.00.00.00.00.00.0100.00.00.0100.00.00.0100.0

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit

us-gaap:ProceedsFromRepaymentsOfLinesOfCredit


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302012-12-312012-09-302011-12-312011-09-30
Value-38.6315.234-68.16-2.263-22.15473-27.50521-6.0756.576-9.577-11.579-0.537345.298-19.4912513200.00.00.00.0-10.00.010.0
Percentage of ProceedsFromRepaymentsOfLinesOfCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.00.0100.0

us-gaap:ProceedsFromRepaymentsOfNotesPayable us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:ProceedsFromRepaymentsOfNotesPayable

myrg:EquipmentNoteNine, us-gaap:SubsequentEvent


Proceeds
Period End2021-07-02
Value-3800000.0
Percentage of ProceedsFromRepaymentsOfNotesPayable100.0

myrg:EquipmentNoteSeven, us-gaap:SubsequentEvent


Proceeds
Period End2021-04-13
Value-7000000.0
Percentage of ProceedsFromRepaymentsOfNotesPayable0.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value986000.0651000.01282000.0514000.0763000.0870000.01153000.01240000.0826000.0832000.01078000.01079000.01352000.01074000.01540000.0336000.01529000.0937000.0755000.0701000.0811000.01032000.0778000.0654000.0388000.0938000.090000.048000.0140000.042000.0237000.0368000.0368000.0178000.0327000.0513000.0224000.0140000.0498000.0508000.0229000.071000.0527000.0280000.0281000.0
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockOptionsExercised


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value319000.0110000.0443000.0224000.0082000.016000.041000.02000.0282000.010000.001305000.0582000.085000.013000.0223000.0911000.04138000.0964000.01012000.0104000.0100000.0304000.01141000.0378000.0275000.0315000.0135000.00587000.0672000.0445000.0719000.0219000.034000.00711000.0300000.0359000.0135000.030000.0403000.0
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfNotesPayable

us-gaap:RepaymentsOfNotesPayable


Repayments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.14317112.1771.2431.8520.01.4550.00.00.00.0
Percentage of RepaymentsOfNotesPayable100.0100.0100.0100.0100.0100.00.0100.00.00.00.00.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2.8851.5021.1720.4812.0873.0241.927100.3650.869
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType, us-gaap:GranteeStatus, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:PerformanceShares, us-gaap:ShareBasedPaymentArrangementEmployee, myrg:LongtermIncentivePlan


Share
Period End2021-06-302021-03-312020-09-30
Value080.110
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0100.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType, us-gaap:PlanName

myrg:TimeVestedStockAwards, myrg:LongtermIncentivePlan


Share
Period End2021-06-302021-03-312020-09-30
Value0.4266.380
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.082.90.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:PlanName

myrg:LongtermIncentivePlan


Share
Period End2020-09-30
Value0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue

myrg:TimeVestedStockAwards, myrg:LongtermIncentivePlan


Share
Period End2021-06-302021-03-31
Value-2.8232.02
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice us-gaap:AwardType, us-gaap:GranteeStatus, us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice

us-gaap:EmployeeStockOption, us-gaap:ShareBasedPaymentArrangementEmployee, myrg:LongtermIncentivePlan


Share
Period End2021-06-302021-03-31
Value1.3121.71
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice100.0100.0

us-gaap:StockIssuedDuringPeriodSharesOther us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesOther

us-gaap:CommonStock


Stock
Period End2021-03-312020-06-302020-03-312019-09-302019-06-302019-03-31
Value1000.01000.01000.01000.01000.00
Percentage of StockIssuedDuringPeriodSharesOther100.0100.0100.0100.0100.00.0

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-06-302019-03-312018-09-302018-06-302018-03-31
Value60000.0123000.010000.023000.055000.033000.068000.0-2000.074000.057000.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueOther

us-gaap:StockIssuedDuringPeriodValueOther


Stock
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value12000.012000.024000.024000.024000.024000.012000.0
Percentage of StockIssuedDuringPeriodValueOther100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueOther us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value12000.012000.024000.024000.024000.036000.0
Percentage of StockIssuedDuringPeriodValueOther100.0100.0100.0100.0100.0150.0

us-gaap:Parent


Stock
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value12000.012000.024000.024000.024000.024000.012000.0
Percentage of StockIssuedDuringPeriodValueOther100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-06-302018-03-31
Value319000.0110000.0224000.01000.082000.041000.02000.0282000.01306000.0581000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-03-312019-09-302019-06-302019-03-312018-06-302018-03-31
Value318000.0109000.0224000.082000.041000.01000.0282000.01305000.0580000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation99.799.1100.0100.0100.050.0100.099.999.8

us-gaap:Parent


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-06-302018-03-31
Value319000.0110000.0224000.01000.082000.041000.02000.0282000.01306000.0581000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-03-312019-03-312018-09-302018-06-302018-03-31
Value10000.041000.020000.023000.0-1000.01000.030000.0
Percentage of StockRepurchasedAndRetiredDuringPeriodShares100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue


Stock
Period End2021-06-302021-03-312020-03-312019-03-312018-09-302018-06-302018-03-31
Value0.7342.6180.4260.7780.0920.0170.934
Percentage of StockRepurchasedAndRetiredDuringPeriodValue100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-03-312019-03-312018-09-302018-06-302018-03-31
Value0.6372.2310.2410.5710.0690.0130.674
Percentage of StockRepurchasedAndRetiredDuringPeriodValue86.885.256.673.475.076.572.2

us-gaap:CommonStock


Stock
Period End2021-06-30
Value0.001
Percentage of StockRepurchasedAndRetiredDuringPeriodValue0.1

us-gaap:Parent


Stock
Period End2021-06-302021-03-312020-03-312019-03-312018-09-302018-06-302018-03-31
Value0.7342.6180.4260.7780.0920.0170.934
Percentage of StockRepurchasedAndRetiredDuringPeriodValue100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetainedEarnings


Stock
Period End2021-06-302021-03-312020-03-312019-03-312018-09-302018-06-302018-03-31
Value0.0960.3870.1850.2070.0230.0040.26
Percentage of StockRepurchasedAndRetiredDuringPeriodValue13.114.843.426.625.023.527.8

us-gaap:VariableLeaseCost

us-gaap:VariableLeaseCost


Variable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value78000.076000.076000.0106000.076000.071000.086000.067000.067000.065000.0
Percentage of VariableLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value271000.0285000.0184000.080000.0115000.0100000.0104000.0144000.0138000.0137000.0199000.0160000.0191000.0291000.0372000.0325000.0313000.0426000.0455000.0490000.0533000.0516000.0477000.0592000.0612000.0650000.0776000.0756000.0787000.0776000.0919000.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

myrg:AccruedPayrollAndIncentiveCompensationCurrent

myrg:AccruedPayrollAndIncentiveCompensationCurrent


Accrued
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value3022219.146161011101010
Percentage of AccruedPayrollAndIncentiveCompensationCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

myrg:AccruedUnionDuesAndBenefit

myrg:AccruedUnionDuesAndBenefit


Accrued
Period End2020-12-312019-12-312018-12-312017-12-31
Value17181112
Percentage of AccruedUnionDuesAndBenefit100.0100.0100.0100.0

myrg:AggregateCostsIncurredOnUncompletedContractsAndEstimatedEarnings

myrg:AggregateCostsIncurredOnUncompletedContractsAndEstimatedEarnings


Aggregate
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value37563705392137103547345535323335268624482718243721051967197818861794164321941713168019002153206519951809174618871824177617481692158015541439136412571027
Percentage of AggregateCostsIncurredOnUncompletedContractsAndEstimatedEarnings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

myrg:BillingsToDate

myrg:BillingsToDate


Billings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value37843735397937053538342635093261262923462664235920661892192918221743162021671678165718732142203319541777174018741821177717601717159315431410133112311009
Percentage of BillingsToDate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

myrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractWithCustomerAssetNetCurrent us-gaap:BusinessAcquisition

myrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractWithCustomerAssetNetCurrent

myrg:CsiElectricalContractorsInc


Business
Period End2020-12-312019-12-312019-07-15
Value393938
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractWithCustomerAssetNetCurrent100.0100.0100.0

myrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractWithCustomerLiabilityNetCurrent us-gaap:BusinessAcquisition

myrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractWithCustomerLiabilityNetCurrent

myrg:CsiElectricalContractorsInc


Business
Period End2020-12-312019-12-312019-07-15
Value181818
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractWithCustomerLiabilityNetCurrent100.0100.0100.0

myrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedExcludingIntangibleAssetNet us-gaap:BusinessAcquisition

myrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedExcludingIntangibleAssetNet

myrg:CsiElectricalContractorsInc


Business
Period End2020-12-312019-12-312019-07-15
Value717171
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedExcludingIntangibleAssetNet100.0100.0100.0

myrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOperatingLeaseLiabilityNoncurrent us-gaap:BusinessAcquisition

myrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOperatingLeaseLiabilityNoncurrent

myrg:CsiElectricalContractorsInc


Business
Period End2020-12-312019-12-312019-07-15
Value7371000.07371000.07407000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOperatingLeaseLiabilityNoncurrent100.0100.0100.0

myrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseLiabilityCurrent us-gaap:BusinessAcquisition

myrg:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseLiabilityCurrent

myrg:CsiElectricalContractorsInc


Business
Period End2020-12-312019-12-312019-07-15
Value2562000.02562000.02526000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseLiabilityCurrent100.0100.0100.0

myrg:ContractWithCustomerLiabilityExcludingProvisionForLossOnContractsCurrent

myrg:ContractWithCustomerLiabilityExcludingProvisionForLossOnContractsCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1341381551231269810275522757
Percentage of ContractWithCustomerLiabilityExcludingProvisionForLossOnContractsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

myrg:DeferredTaxAssetsOperatingLeaseLiabilities

myrg:DeferredTaxAssetsOperatingLeaseLiabilities


Deferred
Period End2020-12-312019-12-312018-12-31
Value5715000.05850000.00
Percentage of DeferredTaxAssetsOperatingLeaseLiabilities100.0100.00.0

myrg:DeferredTaxLiabilityRightOfUseOperatingLeaseAssets

myrg:DeferredTaxLiabilityRightOfUseOperatingLeaseAssets


Deferred
Period End2020-12-312019-12-312018-12-31
Value5702000.05850000.00
Percentage of DeferredTaxLiabilityRightOfUseOperatingLeaseAssets100.0100.00.0

myrg:LeaseLiability

myrg:LeaseLiability


Lease
Period End2021-03-312020-12-312020-09-302019-12-31
Value21222324
Percentage of LeaseLiability100.0100.0100.0100.0

myrg:LeaseLiabilityCurrent

myrg:LeaseLiabilityCurrent


Lease
Period End2021-03-312020-12-312020-09-302019-12-31
Value7039000.06930000.07075000.07340000.0
Percentage of LeaseLiabilityCurrent100.0100.0100.0100.0

myrg:LeaseLiabilityNoncurrent

myrg:LeaseLiabilityNoncurrent


Lease
Period End2021-03-312020-12-312020-09-302019-12-31
Value14151617
Percentage of LeaseLiabilityNoncurrent100.0100.0100.0100.0

myrg:LeaseLiabilityPaymentsDue

myrg:LeaseLiabilityPaymentsDue


Lease
Period End2021-03-312020-12-312020-09-30
Value252727
Percentage of LeaseLiabilityPaymentsDue100.0100.0100.0

myrg:LeaseLiabilityPaymentsDueAfterYearFive

myrg:LeaseLiabilityPaymentsDueAfterYearFive


Lease
Period End2020-12-31
Value795000.0
Percentage of LeaseLiabilityPaymentsDueAfterYearFive100.0

myrg:LeaseLiabilityPaymentsDueInTwelveMonths

myrg:LeaseLiabilityPaymentsDueInTwelveMonths


Lease
Period End2020-12-31
Value9432000.0
Percentage of LeaseLiabilityPaymentsDueInTwelveMonths100.0

myrg:LeaseLiabilityPaymentsDueNextTwelveMonths

myrg:LeaseLiabilityPaymentsDueNextTwelveMonths


Lease
Period End2021-03-312020-09-30
Value8036000.08775000.0
Percentage of LeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0

myrg:LeaseLiabilityPaymentsDueYearFive

myrg:LeaseLiabilityPaymentsDueYearFive


Lease
Period End2021-03-312020-12-312020-09-30
Value796000.01127000.0976000.0
Percentage of LeaseLiabilityPaymentsDueYearFive100.0100.0100.0

myrg:LeaseLiabilityPaymentsDueYearFour

myrg:LeaseLiabilityPaymentsDueYearFour


Lease
Period End2021-03-312020-12-312020-09-30
Value1132000.02772000.02491000.0
Percentage of LeaseLiabilityPaymentsDueYearFour100.0100.0100.0

myrg:LeaseLiabilityPaymentsDueYearThree

myrg:LeaseLiabilityPaymentsDueYearThree


Lease
Period End2021-03-312020-12-312020-09-30
Value2968000.05502000.05048000.0
Percentage of LeaseLiabilityPaymentsDueYearThree100.0100.0100.0

myrg:LeaseLiabilityPaymentsDueYearTwo

myrg:LeaseLiabilityPaymentsDueYearTwo


Lease
Period End2021-03-312020-12-312020-09-30
Value5736000.07496000.06988000.0
Percentage of LeaseLiabilityPaymentsDueYearTwo100.0100.0100.0

myrg:LeaseLiabilityPaymentsRemainderOfFiscalYear

myrg:LeaseLiabilityPaymentsRemainderOfFiscalYear


Lease
Period End2021-03-312020-09-30
Value7136000.02683000.0
Percentage of LeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0

myrg:LeaseLiabilityUndiscountedExcessAmount

myrg:LeaseLiabilityUndiscountedExcessAmount


Lease
Period End2021-03-312020-12-312020-09-30
Value3978000.04464000.04451000.0
Percentage of LeaseLiabilityUndiscountedExcessAmount100.0100.0100.0

myrg:LeaseObligationCurrent

myrg:LeaseObligationCurrent


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value7191000.07039000.06930000.07075000.07757000.07740000.07340000.0
Percentage of LeaseObligationCurrent100.0100.0100.0100.0100.0100.0100.0

myrg:LeaseObligationNoncurrent

myrg:LeaseObligationNoncurrent


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value15141516171717
Percentage of LeaseObligationNoncurrent100.0100.0100.0100.0100.0100.0100.0

myrg:LeaseObligationTotal

myrg:LeaseObligationTotal


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value22212223252524
Percentage of LeaseObligationTotal100.0100.0100.0100.0100.0100.0100.0

myrg:LesseeLiabilityToBePaidAfterYearFive

myrg:LesseeLiabilityToBePaidAfterYearFive


Lessee
Period End2020-09-30
Value795000.0
Percentage of LesseeLiabilityToBePaidAfterYearFive100.0

myrg:NetContractAssetsLiabilities

myrg:NetContractAssetsLiabilities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value595227959512311116112115910177387449
Percentage of NetContractAssetsLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

myrg:NetCostsAndEstimatedEarningsInExcessOfBillings

myrg:NetCostsAndEstimatedEarningsInExcessOfBillings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value-28.467-29.912-58.0275.4848.84329237456102547738744963512327342326103241316.488122.836-1.115-12.433-25.109-12.1521129332518
Percentage of NetCostsAndEstimatedEarningsInExcessOfBillings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

myrg:OperatingAndFinanceLeaseRightOfUseAsset

myrg:OperatingAndFinanceLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value22212223252524
Percentage of OperatingAndFinanceLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0

myrg:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingAndExercisableOptionsWeightedAverageExercisePrice us-gaap:AwardType

myrg:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingAndExercisableOptionsWeightedAverageExercisePrice

us-gaap:EmployeeStockOption


Share
Period End2020-12-31
Value22.94
Percentage of ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingAndExercisableOptionsWeightedAverageExercisePrice100.0

myrg:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingAndExercisableOptionsWeightedAverageExercisePrice us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:EmployeeStockOption, myrg:RangeOfExercisePricesFromDollarsSeventeenPointFortyEightToSeventeenPointFortyEight


Share
Period End2020-12-31
Value17.48
Percentage of ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingAndExercisableOptionsWeightedAverageExercisePrice76.2

us-gaap:EmployeeStockOption, myrg:RangeOfExercisePricesFromDollarsTwentyFourPointEighteenToTwentyFourPointEighteen


Share
Period End2020-12-31
Value24.18
Percentage of ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingAndExercisableOptionsWeightedAverageExercisePrice105.4

us-gaap:EmployeeStockOption, myrg:RangeOfExercisePricesFromDollarsTwentyFourPointSixtyEightToTwentyFourPointSixtyEight


Share
Period End2020-12-31
Value24.68
Percentage of ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingAndExercisableOptionsWeightedAverageExercisePrice107.6

myrg:UnrecognizedTaxBenefitIncludingTaxInterestAccrued

myrg:UnrecognizedTaxBenefitIncludingTaxInterestAccrued


Unrecognized
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value422000.0176000.0375000.0400000.0400000.0800000.0787000.0301000.0564000.0730000.0846000.0
Percentage of UnrecognizedTaxBenefitIncludingTaxInterestAccrued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableGrossCurrent

us-gaap:AccountsReceivableGrossCurrent


Accounts
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value387391289283235187159174168127
Percentage of AccountsReceivableGrossCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivable


Allowance
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value1696000.03364000.01331000.0605000.0432000.0376000.01179000.01132000.01305000.01078000.0947000.0
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1980000.01665000.01696000.01761000.03186000.03140000.03364000.04773000.04517000.02020000.01331000.0564000.0568000.0537000.0605000.0606000.0474000.0442000.0432000.0362000.0317000.0346000.0376000.0386000.0595000.01028000.01179000.01192000.01168000.01144000.01132000.01252000.01228000.01184000.01305000.01338000.01142000.01160000.01078000.01001000.0824000.0947000.0
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables

myrg:CsiElectricalContractorsInc


Business
Period End2020-12-312019-12-312019-07-15
Value595959
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables100.0100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable

myrg:CsiElectricalContractorsInc


Business
Period End2020-12-312019-12-312019-07-15
Value303029
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable100.0100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther

myrg:CsiElectricalContractorsInc


Business
Period End2020-12-312019-12-312019-07-15
Value4703000.04703000.04776000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther100.0100.0100.0

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill

myrg:CsiElectricalContractorsInc


Business
Period End2020-12-312019-12-312019-07-15
Value252526
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill100.0100.0100.0

us-gaap:ConstructionContractorReceivableRetainage

us-gaap:ConstructionContractorReceivableRetainage


Construction
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value918488928891
Percentage of ConstructionContractorReceivableRetainage100.0100.0100.0100.0100.0100.0

us-gaap:ContractReceivableDueOneYearOrLess

us-gaap:ContractReceivableDueOneYearOrLess


Contract
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value38238528223120015912011311299
Percentage of ContractReceivableDueOneYearOrLess100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss

us-gaap:ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss


Contract
Period End2020-12-312019-12-312018-12-31
Value400000.000
Percentage of ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss100.00.00.0

us-gaap:ContractWithCustomerAssetAccumulatedAllowanceForCreditLossCurrent

us-gaap:ContractWithCustomerAssetAccumulatedAllowanceForCreditLossCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value339000.0350000.0359000.0502000.0393000.0400000.0147000.0
Percentage of ContractWithCustomerAssetAccumulatedAllowanceForCreditLossCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetNetCurrent

us-gaap:ContractWithCustomerAssetNetCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value196192185221224223217238174188160120
Percentage of ContractWithCustomerAssetNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtIssuanceCostsLineOfCreditArrangementsNet us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtIssuanceCostsLineOfCreditArrangementsNet

myrg:CreditAgreement, us-gaap:SecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-30
Value1000000.01100000.01100000.01200000.0
Percentage of DebtIssuanceCostsLineOfCreditArrangementsNet100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value45442922322929272624
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value302515111416
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsForeign

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsForeign


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value3601000.05499000.02672000.02173000.0595000.0373000.0
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsForeign100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value7250000.03439000.01958000.01359000.01652000.0960000.0886000.02588000.03253000.03245000.0
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBonuses

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBonuses


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value7554000.04904000.03271000.0590000.02908000.02497000.02578000.02884000.01931000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBonuses100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1300000.01164000.01143000.01571000.02554000.03986000.04420000.04245000.05099000.05262000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value703000.0642000.0350000.0317000.0257000.0240000.072000.0435000.049000.0254000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value4091000.04458000.04299000.04555000.06670000.07464000.08369000.08643000.09439000.09772000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value1960000.01856000.01890000.02186000.03592000.03670000.03799000.03927000.04056000.04185000.0
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value2564000.02187000.02025000.01639000.02259000.0897000.0
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value34322618262525242220
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesUndistributedForeignEarnings

us-gaap:DeferredTaxLiabilitiesUndistributedForeignEarnings


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value1322000.02280000.01443000.0091000.00
Percentage of DeferredTaxLiabilitiesUndistributedForeignEarnings100.0100.0100.00.0100.00.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized


Employee
Period End2020-12-312019-12-312018-12-31
Value6900000.05400000.01800000.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:AwardType

myrg:TimeVestedStockAwards


Employee
Period End2020-12-312019-12-312018-12-31
Value2900000.02800000.04.4
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized42.051.90.0

us-gaap:PerformanceShares


Employee
Period End2020-12-312019-12-312018-12-312017-12-312015-12-312014-12-312013-12-312012-12-31
Value4000000.02600000.02600000.01900000.02700000.02500000.01100000.01100000.0
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized58.048.1144.40.00.00.00.00.0

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiability


Finance
Period End2021-03-312020-12-312020-09-30
Value53000.0318000.0607000.0
Percentage of FinanceLeaseLiability100.0100.0100.0

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityCurrent


Finance
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value53000.0318000.0607000.0893000.01137000.01135000.01144000.01135000.01127000.01119000.0
Percentage of FinanceLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDue


Finance
Period End2021-03-312020-12-312020-09-30
Value53000.0321000.0615000.0
Percentage of FinanceLeaseLiabilityPaymentsDue100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths


Finance
Period End2020-12-312020-09-30
Value321000.0326000.0
Percentage of FinanceLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear


Finance
Period End2021-03-312020-09-30
Value53000.0289000.0
Percentage of FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount


Finance
Period End2020-12-312020-09-30
Value3000.08000.0
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount100.0100.0

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAsset


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value9000.0140000.0390000.0664000.0934000.01204000.01478000.0
Percentage of FinanceLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization us-gaap:PropertyPlantAndEquipmentByType

us-gaap:FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization

myrg:ConstructionEquipment


Finance
Period End2020-12-312019-12-31
Value420403
Percentage of FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization100.0100.0

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent

us-gaap:FinanceLeaseWeightedAverageDiscountRatePercent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value3.12.62.62.50.0250.0250.025
Percentage of FinanceLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value151514131312109.9198.57.7657.0316.1665.4235.3055.1835.2625.0824.8724.6844.4894.3014.0093.7983.4783.3943.313.2273.1433.062.9772.8932.8092.7252.6422.5582.4742.392.3072.2232.1392.0551.888
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value8.9146.6234.974.0693.593.1032.7062.3722.0371.702
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization61.660.970.778.576.681.783.982.079.676.6

us-gaap:OrderOrProductionBacklog


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value5.2894.0391.8890.9890.9890.6950.5210.5210.5210.521
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization36.637.126.919.121.118.316.118.020.423.4

us-gaap:TradeNames


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value0.2640.2180.1720.1250.0790.00.00.0
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization1.82.02.42.41.70.00.00.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive


Finite
Period End2020-12-31
Value11
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2020-12-31
Value2312000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2020-12-31
Value2312000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2020-12-31
Value2312000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2020-12-31
Value2312000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2020-12-31
Value2312000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0

us-gaap:FiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value3131175.2775.2665.1444.0154.0154.0154.015
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OrderOrProductionBacklog


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value5.2895.2892.7890.9890.9890.7650.5210.5210.5210.521
Percentage of FiniteLivedIntangibleAssetsGross16.916.916.118.718.814.913.013.013.013.0

us-gaap:TradeNames


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value0.6960.6950.6950.6950.6950.6950.0
Percentage of FiniteLivedIntangibleAssetsGross2.22.24.013.213.213.50.0

us-gaap:GoodwillGross

us-gaap:GoodwillGross


Goodwill
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value6666564646474646
Percentage of GoodwillGross100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillGross us-gaap:StatementBusinessSegments

myrg:CommercialAndIndustrial


Goodwill
Period End2020-12-312019-12-31
Value2525
Percentage of GoodwillGross39.139.1

us-gaap:GuaranteeObligationsMaximumExposure us-gaap:GuaranteeObligationsByNature

us-gaap:GuaranteeObligationsMaximumExposure

us-gaap:PerformanceGuarantee


Guarantee
Period End2021-06-302021-03-312020-12-312020-09-30
Value1300120013301360
Percentage of GuaranteeObligationsMaximumExposure100.0100.0100.0100.0

us-gaap:IncomeTaxesReceivable

us-gaap:IncomeTaxesReceivable


Income
Period End2021-06-302020-12-312020-06-302020-03-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302012-12-312011-12-312011-09-302011-06-302010-12-31
Value5844000.01534000.0001973000.00000391000.0403000.0660000.02518000.02474000.01296000.01727000.04710000.05617000.04295000.04050000.002059000.02629000.01970000.01286000.02054000.083000.01044000.0884000.02136000.02198000.02144000.0
Percentage of IncomeTaxesReceivable100.0100.00.00.0100.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InsuranceSettlementsReceivableCurrent

us-gaap:InsuranceSettlementsReceivableCurrent


Insurance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value1111119.8519.129116.4158.7391010105.4214.384.3664.2214.0033.933.785
Percentage of InsuranceSettlementsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InsuranceSettlementsReceivableNoncurrent

us-gaap:InsuranceSettlementsReceivableNoncurrent


Insurance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value272627242327301717161716141414141414
Percentage of InsuranceSettlementsReceivableNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntangibleAssetsGrossExcludingGoodwill

us-gaap:IntangibleAssetsGrossExcludingGoodwill


Intangible
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value6565401616151313
Percentage of IntangibleAssetsGrossExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value8819000.08036000.09111000.08449000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear


Lessee
Period End2021-06-302021-03-312020-09-30
Value5052000.07083000.02394000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:LettersOfCreditOutstandingAmount us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:FairValueByLiabilityClass, us-gaap:LongtermDebtType

us-gaap:LettersOfCreditOutstandingAmount

us-gaap:LetterOfCredit, myrg:CreditAgreement, myrg:ContractPerformanceObligations, us-gaap:SecuredDebt


Letters
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.60.60.50.60.61.23.63.63.6
Percentage of LettersOfCreditOutstandingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LetterOfCredit, myrg:CreditAgreement, myrg:InsuranceProgramObligations, us-gaap:SecuredDebt


Letters
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value12129.81010.010.010.018181717
Percentage of LettersOfCreditOutstandingAmount0.00.01633.31783.32000.01666.71666.71541.7513.9488.9488.9

us-gaap:LettersOfCreditOutstandingAmount us-gaap:CreditFacility, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LetterOfCredit, myrg:CreditAgreement, us-gaap:SecuredDebt


Letters
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-282017-12-31
Value121210111010101922212115020
Percentage of LettersOfCreditOutstandingAmount0.00.01733.31883.32100.01766.71766.71641.7613.9588.9588.90.00.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

myrg:MasterLoanAgreement, us-gaap:NotesPayableToBanks


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value1572000.04511000.04381000.04381000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

myrg:MasterLoanAgreement, us-gaap:NotesPayableToBanks


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value1281000.06592000.02189000.02189000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

myrg:MasterLoanAgreement, us-gaap:NotesPayableToBanks


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value583000.02189000.07102000.07103000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

myrg:MasterLoanAgreement, us-gaap:NotesPayableToBanks


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value2962000.07102000.04645000.04645000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

myrg:MasterLoanAgreement, us-gaap:NotesPayableToBanks


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value1617000.04645000.04511000.04511000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear

myrg:MasterLoanAgreement, us-gaap:NotesPayableToBanks


Long
Period End2021-06-302021-03-312020-09-30
Value770000.04381000.02143000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear100.0100.0100.0

us-gaap:LossContingencyAccrualAtCarryingValue us-gaap:LossContingenciesByNatureOfContingency

us-gaap:LossContingencyAccrualAtCarryingValue

us-gaap:InsuranceClaims


Loss
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value696654454236
Percentage of LossContingencyAccrualAtCarryingValue100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value3.93.93.913.90.0390.0380.038
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherEmployeeRelatedLiabilitiesCurrent

us-gaap:OtherEmployeeRelatedLiabilitiesCurrent


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value105.3251.2150.4432.0041.2944.762.8624.6792.78
Percentage of OtherEmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherReceivablesGrossCurrent

us-gaap:OtherReceivablesGrossCurrent


Other
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value5538000.06099000.07475000.09073000.01856000.0343000.0606000.0334000.0177000.0569000.0
Percentage of OtherReceivablesGrossCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization


Property
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value307302294290272
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization100.0100.0100.0100.0100.0

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization


Property
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value185181185185185
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization100.0100.0100.0100.0100.0

us-gaap:ProvisionForLossOnContracts

us-gaap:ProvisionForLossOnContracts


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2793000.02134000.02826000.02310000.02256000.02038000.02813000.01652000.01217000.01454000.01483000.01305000.0
Percentage of ProvisionForLossOnContracts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PurchaseCommitmentRemainingMinimumAmountCommitted

us-gaap:PurchaseCommitmentRemainingMinimumAmountCommitted


Purchase
Period End2021-06-302021-03-312020-12-312020-09-30
Value14189.53.0
Percentage of PurchaseCommitmentRemainingMinimumAmountCommitted100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligation


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value145015301540160014501430141012701060106010601018930881
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligation us-gaap:StatementBusinessSegments

myrg:CommercialAndIndustrial


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value916940889965102510781027899673657644615524521
Percentage of RevenueRemainingPerformanceObligation63.261.557.860.370.775.472.970.963.562.160.860.456.359.2

myrg:TransmissionAndDistribution


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value530584645639421349381368389398418403406359
Percentage of RevenueRemainingPerformanceObligation36.638.241.939.929.124.427.129.036.837.639.539.643.740.8

us-gaap:SelfInsuranceReserveCurrent

us-gaap:SelfInsuranceReserveCurrent


Self
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value252424212022181919201914131213121244423737333635363839394039393939393939383838373534
Percentage of SelfInsuranceReserveCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SelfInsuranceReserveNoncurrent

us-gaap:SelfInsuranceReserveNoncurrent


Self
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value464545424043483433323434323232333232
Percentage of SelfInsuranceReserveNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

myrg:TimeVestedStockAwards


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value28.9632.2930.429.5525.26
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0

us-gaap:PerformanceShares


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312010-12-31
Value36.5437.0239.7335.2932.9232.6826.6324.4624.4524.4521.2922.122.122.120.5119.3420.3917.18
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue126.2114.6130.7119.4130.30.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:EmployeeStockOption


Share
Period End2020-12-312019-12-312018-12-312017-12-31
Value0.9120.3520.4462.292
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0100.0100.0100.0

us-gaap:SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit

us-gaap:SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit


Significant
Period End2020-12-31
Value-100000.0
Percentage of SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit100.0

us-gaap:StockRepurchaseProgramAuthorizedAmount1 us-gaap:ShareRepurchaseProgram

us-gaap:StockRepurchaseProgramAuthorizedAmount1

myrg:ShareRepurchaseProgram


Stock
Period End2020-11-022016-12-312016-09-302016-02-102015-12-312015-12-102015-07-30
Value50162162142676742
Percentage of StockRepurchaseProgramAuthorizedAmount1100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1 us-gaap:ShareRepurchaseProgram

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

myrg:ShareRepurchaseProgram


Stock
Period End2020-12-312015-12-312015-12-102015-09-302015-07-30
Value5024251825
Percentage of StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1100.0100.0100.0100.0100.0

us-gaap:UnbilledContractsReceivable

us-gaap:UnbilledContractsReceivable


Unbilled
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value10510897128135128126111
Percentage of UnbilledContractsReceivable100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value69000.024000.048000.0031000.0139000.0223000.0189000.0185000.0113000.0
Percentage of UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept


us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
(None,)
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amountus-gaap: Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities
us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Operating Income Lossus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents
(None,)
Other Comprehensive Income Loss Net Of Taxus-gaap: Statement Equity Components
us-gaap:ProfitLoss
us-gaap:StatementEquityComponents
(None,)
Profit Lossus-gaap: Statement Equity Components
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementBusinessSegments
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Statement Business Segments
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ContractWithCustomerSalesChannel, us-gaap:StatementBusinessSegments
(None, 'myrg:TransmissionAndDistribution')
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Contract With Customer Sales Channel, us-gaap: Statement Business Segments
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ContractWithCustomerBasisOfPricing
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Contract With Customer Basis Of Pricing
us-gaap:Assets
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
('us-gaap:OperatingSegments', None)
Assetsus-gaap: Consolidation Items, us-gaap: Statement Business Segments
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Property Plant And Equipment Grossus-gaap: Property Plant And Equipment By Type
us-gaap:Goodwill
us-gaap:StatementBusinessSegments
(None,)
Goodwillus-gaap: Statement Business Segments
us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
(None,)
Finite Lived Intangible Assets Netus-gaap: Finite Lived Intangible Assets By Major Class
us-gaap:LongTermDebt
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
(None, 'us-gaap:NotesPayableToBanks')
Long Term Debtus-gaap: Debt Instrument, us-gaap: Longterm Debt Type
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
(None,)
Stockholders Equity Including Portion Attributable To Noncontrolling Interestus-gaap: Statement Equity Components
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents
(None,)
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Valueus-gaap: Statement Equity Components
us-gaap:ProfitLoss
us-gaap:StatementEquityComponents
(None,)
Profit Lossus-gaap: Statement Equity Components
us-gaap:DebtInstrumentInterestRateStatedPercentage
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
(None, 'us-gaap:NotesPayableToBanks')
Debt Instrument Interest Rate Stated Percentageus-gaap: Debt Instrument, us-gaap: Longterm Debt Type