PRO


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

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostOfGoodsAndServicesSold
us-gaap:ProductOrService

us-gaap:CostOfRevenue

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GrossProfit

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxExpenseBenefit

us-gaap:InterestExpenseDebt

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:OperatingIncomeLoss

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax
us-gaap:ProductOrService

us-gaap:Revenues
us-gaap:StatementGeographical

us-gaap:SellingAndMarketingExpense

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:CumulativeEffectPeriodOfAdoption
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:AccountsReceivableNetCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherAssetsNoncurrent

us-gaap:AccountsPayableCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:CumulativeEffectPeriodOfAdoption
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapital

us-gaap:RetainedEarningsAccumulatedDeficit
us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:AmortizationOfFinancingCosts

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities
pro:InterestRate, us-gaap:Range
us-gaap:DebtInstrumentInterestRateStatedPercentage
us-gaap:DebtInstrument
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

pro:AccountsAndUnbilledReceivables

pro:Adjustmenttoadditionalpaidincapitalpurchaseofcappedcall
us-gaap:StatementEquityComponents

pro:Convertibledebtinterestandamortization
us-gaap:DebtInstrument
pro:Convertibledebtissuancecostequitycomponent

pro:Costofsubscriptionmaintenanceandsupport

pro:ESPPcontributionsbyEmployees

pro:InternalUseSoftwareDevelopmentCostsCapitalized

pro:MaximumAmountContributableByEmployeesUnderESPPAnnually

pro:MaximumAmountContributablebyemployeesunderESPPHalfyearly

pro:PercentageOfTotalRevenue
us-gaap:StatementGeographical

pro:Purchaseofcappedcall
us-gaap:DebtInstrument

pro:TaxWithholdingRelatedToNetShareSettlementOfRestrictedStockUnits

pro:Totalsubscriptionmaintenanceandsupportrevenue

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt
us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:StatementEquityComponents

us-gaap:AmortizationOfDebtDiscountPremium

us-gaap:AmortizationOfDeferredCharges

us-gaap:AmortizationOfFinancingCostsAndDiscounts

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalizedContractCostAmortization
us-gaap:DebtInstrument
us-gaap:DebtInstrumentConvertibleConversionRatio1
us-gaap:DebtInstrument
us-gaap:DebtInstrumentConvertibleStockPriceTrigger

us-gaap:DebtInstrumentPeriodicPaymentInterest

us-gaap:DeferredRevenueRevenueRecognized1

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInDeferredRevenue

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities

us-gaap:IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:OperatingLeasePayments

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:ProceedsFromConvertibleDebt

us-gaap:ProceedsFromStockPlans
us-gaap:StatementEquityComponents

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ResearchAndDevelopmentExpenseSoftwareExcludingAcquiredInProcessCost

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceOfferingDate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross
us-gaap:StatementEquityComponents

dei:EntityCommonStockSharesOutstanding

pro:AccountAndUnbilledReceivablesNet

pro:DebtInstrumentCovenantMinimumLiquidity
us-gaap:DebtInstrument
pro:DebtinstrumentConvertibleInitialissuepriceper1000ofprincipal

pro:DeferredTaxAssetDeferredRevenue

pro:DeferredTaxAssetDisallowedInterest

pro:DeferredTaxAssetsOperatingLeaseLiabilities

pro:InternalUseSoftwareDevelopedSubjectToAmortization

pro:LesseeOperatingLeaseAnticipatedIncentives

pro:REtaxcreditcarryforwardforfutureuse

pro:RevenueRemainingPerformanceObligationtoberecognizedwithin12months

pro:StockPriceAtYearEnd

pro:TreasuryMoneyMarketFundsAtFairValue

us-gaap:AccountsReceivableGross

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent
us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:CapitalizedContractCostNet

us-gaap:ContractualObligation

us-gaap:ConvertibleDebt

us-gaap:ConvertibleDebtNoncurrent
us-gaap:DebtInstrument

us-gaap:CostMethodInvestmentsFairValueDisclosure

us-gaap:DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent

us-gaap:DebtInstrumentFaceAmount
us-gaap:DebtInstrument

us-gaap:DebtInstrumentFairValue
us-gaap:DebtInstrument
us-gaap:DebtInstrumentInterestRateEffectivePercentage
us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:DebtInstrumentUnamortizedDiscount

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

us-gaap:DeferredCosts

us-gaap:DeferredCostsCurrent

us-gaap:DeferredCostsCurrentAndNoncurrent

us-gaap:DeferredRevenueCurrent

us-gaap:DeferredRevenueNoncurrent

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsForeign

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsResearch

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

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:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLossCarryforwards
us-gaap:BusinessAcquisition

us-gaap:PurchaseObligation

us-gaap:RevenueRemainingPerformanceObligation
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
us-gaap:AwardType, us-gaap:PlanName
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
us-gaap:PlanName
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
us-gaap:PlanName
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested

us-gaap:StockRepurchaseProgramAuthorizedAmount1

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

us-gaap:TreasuryStockShares

us-gaap:UnamortizedDebtIssuanceExpense

us-gaap:UnbilledReceivablesCurrent
us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Other Nonoperating Income Expense
Balance Sheet
Intangible Assets Net Excluding Goodwill
Assets
Operating Lease Right Of Use Asset
Current Assets
Prepaid Expense And Other Assets Current
NonCurrent Assets
Intangible Assets Net Excluding Goodwill
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Operating Lease Liability
Current Liabilities
Accounts Payable Current
Stockholders Equity
Retained Earnings Accumulated Deficit
CashFlow
Net Income Loss
NetCashProvidedByUsedInOperatingActivities
Net Income Loss
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
Shares
Treasury Stock Shares
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net
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 ██████▇▇▆▅▅▅▃▃▃▃▃▃▃▃▃▃▂▂▃▃▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁0.0490.0490.0480.0480.0480.0480.0470.0470.0450.0420.0420.0420.0370.0370.0360.0360.0360.0360.0350.0350.0350.0350.0340.0340.0350.0350.0340.0340.0340.0340.0330.0330.0320.0320.0320.0320.0320.0320.0310.0310.031NA0.031NANA
us-gaap:CommonStockSharesIssued ██████▇▇▆▅▅▅▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁49.02040548.93348848.14226748.0303447.98518447.97238347.31084646.46021244.60130842.29024641.57349141.5566237.12892437.00650936.3567636.31913536.12397535.82124135.00123634.93802134.75240234.73780134.15656134.09854434.01765733.91198633.4778133.43482533.38551133.35125832.60622832.53598332.486851NA31.96643231.87276631.82518731.75300231.4324331.35483531.301743NA30.777NANA
us-gaap:CommonStockSharesOutstanding ██████▇▇▆▅▅▅▃▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁44.33968244.25276543.46154443.34961743.30446143.2916642.63012342.04262740.18372337.87266137.15590637.13903532.71133932.58892431.93917531.9015531.7063931.40365630.58365130.52043630.33481730.32021629.73897629.68095929.60007229.49440129.06022529.0172428.96792628.93367328.18864328.11839828.069266NA27.54884727.45518127.40760227.33541727.01484526.9372526.884158NA26.359415NANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁44.32144.245NA43.34743.30443.102NA41.27639.41337.623NA35.67632.65132.378NA31.86731.61531.099NA30.46930.3330.226NA29.64929.56529.375NA29.00048128.95823328.667782NA30.31549929.9585829.365342NA28.36258228.33714328.284044NA27.84205727.82820927.447436NA26.08897126.033003
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁44.32144.245NA43.34743.30443.102NA41.27639.41337.623NA35.67632.65132.378NA31.86731.61531.099NA30.46930.3330.226NA29.64929.56529.375NA29.00048128.95823328.667782NA28.09633328.00651727.757397NA27.42626927.37542927.166973NA26.92819526.82915826.594083NA26.08897126.033003
us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted █▁44.32144.245NA43.34743.30443.102NA41.27639.41337.623NA35.67632.65132.378NA31.86731.61531.099NA30.46930.3330.226NANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:ConvertibleDebtSecurities▄▄5.85.8NA5.82.22.2NA3.14.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities us-gaap:StockCompensationPlan▄▄1.21.2NA1.31.21.6NA2.12.02.0NA2.22.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:EarningsPerShareBasic ▃▃▃▃▄▂▃▃▃▃▄▃▂▂▂▁▂▁▂▂▁▁▂▂▂▃▂▆▅▅▇█▇██████████▆▇-0.41-0.5-0.42-0.44-0.4-0.53-0.41-0.42-0.44-0.45-0.34-0.44-0.52-0.58-0.53-0.67-0.62-0.65-0.61-0.52-0.68-0.68-0.6-0.61-0.53-0.48-0.6-0.13-0.24-0.290.00.040.020.060.050.050.040.040.080.070.050.030.03-0.09-0.02
us-gaap:EarningsPerShareDiluted ▃▃▃▃▄▂▃▃▃▃▄▃▂▂▂▁▂▁▂▂▁▁▂▂▂▃▂▆▅▅▇█▇██████████▆▇-0.41-0.5-0.42-0.44-0.4-0.53-0.41-0.42-0.44-0.45-0.34-0.44-0.52-0.58-0.53-0.67-0.62-0.65-0.61-0.52-0.68-0.68-0.6-0.61-0.53-0.48-0.6-0.13-0.24-0.290.00.030.020.060.050.050.040.040.080.070.050.030.03-0.09-0.02
us-gaap:EarningsPerShareBasicAndDiluted ▆▅▆▆▇▄▆▆▆▆█▆▄▃▄▁▂▂▃▄▁▁-0.41-0.5-0.41999999999999993-0.44-0.4-0.53-0.4099999999999999-0.42-0.44-0.45-0.33000000000000007-0.44-0.52-0.58-0.53-0.67-0.62-0.65-0.6000000000000001-0.52-0.68-0.68NANANANANANANANANANANANANANANANANANANANANANANA
  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
 COGS Ratio us-gaap:ProductOrService pro:SubscriptionMaintenanceAndSupport█▁52.79452.322NANA54.11855.693NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:ProductOrService us-gaap:Maintenance▁▂▂▃▄▅▅▆▇▇███8.579.6749.66310.76511.74112.52313.41214.40515.0415.32715.72316.23816.225NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:ProductOrService us-gaap:Service▃▂▂▂▃▄▆▅█▃▁▁▂9.6079.0568.2988.7149.62910.61812.05711.15313.739.8837.9127.8568.468NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:ProductOrService us-gaap:SubscriptionAndCirculation███▇▇█▇▆▄▄▃▂▁44.22442.64842.89742.02942.37743.1740.20737.46333.0830.92128.31623.88822.038NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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:AllocatedShareBasedCompensationExpense ██▅▆▅▆▆▆▅▅▄▄▅▅▅▅▅▆▅▃▅▅▆▆▆▇▆▅▅▄▄▄▄▃▂▂▂▁▁▁▁8.6068.175.9226.3785.7526.3476.4466.2095.9796.0465.0984.9575.4625.9365.1315.5715.9326.1626.0213.1925.8695.3846.4836.6317.0057.7456.2866.0755.9454.3594.2774.2644.1393.422.6832.492.442.0321.8241.6471.605NANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▂▁▂▂▃▁▃▂▃▃▄▃▂▂▃▂▂▂▂▃▂▂▂▂▃▃▂▆▆▅▇███████████-17.889-22.637-17.753-18.724-17.122-22.905-17.087-18.005-17.339-17.187-12.968-15.874-17.633-18.329-16.587-20.891-18.394-19.96-19.657-15.54-20.9-19.716-18.282-17.935-14.881-16.786-18.272-5.312-6.813-8.4810.1390.9930.581.7341.4241.3560.9951.1912.1211.9321.4410.856NANANA
us-gaap:CostOfGoodsAndServicesSold ▇▇▇▆▇██▇▆▅▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▂▂▂▁▁▁26.40426.49225.31924.63725.9528.72728.36126.38323.58320.7919.45819.47618.72419.52118.14717.72416.08616.60915.95215.64216.04815.71115.41315.26615.7315.00116.17913.72714.17114.54610.76911.02610.786NANANANANANANANANANANANA
us-gaap:CostOfRevenue ▇▇▇▆▇██▇▆▅▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▂▂▂▁▁▁26.40426.49225.31924.63725.9528.72728.36126.38323.58320.7919.45819.47618.72419.52118.14717.72416.08616.60915.95215.64216.04815.71115.41315.26615.7315.00116.17913.72714.17114.54610.76911.02610.786NANANANANANANANANANANANA
us-gaap:GeneralAndAdministrativeExpense ▄▆▄▅▇█▅▄▅▅▃▃▃▄▃▃▃▃▄▂▂▂▂▂▂▃▄▂▂▁11.01813.45410.71911.94813.52814.8811.99411.55312.0411.66710.28910.17910.14510.6899.82210.3249.78210.40810.6279.2539.6169.0418.7319.6269.56210.59811.4699.178.8738.249NANANANANANANANANANANANANANANA
us-gaap:GrossProfit ▇▇▇▇▇▇▇▇█▇▆▅▅▅▅▄▄▄▄▄▃▄▅▅▅▅█▆▆▅▅▅▄▄▄▄▃▃▃▃▃▂▂▁▂35.99734.88635.53936.87137.79737.58437.81437.76740.29535.34133.15529.59928.70228.38928.19724.21324.3223.5223.97422.74220.9922.21726.59925.625.95928.67839.31932.99230.19726.90428.10125.78724.74123.07323.04521.24420.63419.118.98818.79717.34415.07314.4410.40213.024
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments ▂▁▂▂▃▁▂▂▂▃▄▃▃▂▃▁▂▂▂▃▂▂▂▂▃▃▆▆▅▅▇█▇▇████████▇▆▇-17.878-21.88-18.108-18.539-17.078-22.583-17.242-17.239-17.281-16.695-12.736-15.611-16.975-18.724-16.886-21.497-19.364-20.03-18.533-15.481-20.422-20.319-17.402-18.252-15.298-14.12-2.958-4.186-8.442-9.4720.5581.4780.6510.5862.2191.7971.852.1522.6922.592.0921.26-0.258-3.764-0.947
us-gaap:IncomeTaxExpenseBenefit ▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▂▂▂▂▂▂▂▂▂▂█▁▁▁▂▂▂▁▂▂▂▂▂▂▂▂▁▁▁0.1680.1490.0760.3180.130.1520.0580.1080.2360.2220.0240.175-0.1310.1320.094-0.2710.1490.177-0.020.2270.1050.1580.329-0.070.370.1114.55-0.257-1.24-0.560.4190.4850.071-1.1480.7950.4410.8550.9610.5710.6580.6510.404-0.889-1.359-0.319
us-gaap:InterestExpenseDebt ▁▁█▃▂▂▃▆███▇▇▇▇▇▃▃▃▃▃▃▃▃▃▂1.5761.5764.482.4982.0852.0622.4183.7174.2744.3564.3154.2664.2264.1794.144.0942.592.3942.3762.3392.3172.2872.2722.2342.2232.185NANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▂▁▂▂▃▁▃▃▂▃▄▃▃▂▃▁▂▂▂▃▂▂▂▂▃▃▂▆▅▅▇████████████▇▇-18.046-22.029-18.184-18.857-17.208-22.735-17.3-17.347-17.517-16.917-12.76-15.786-16.844-18.856-16.98-21.226-19.513-20.207-18.513-15.708-20.527-20.477-17.731-18.182-15.668-14.23-17.459-3.734-6.996-8.4550.1390.9930.581.7341.4241.3560.9951.1912.1211.9321.4410.8560.631-2.405-0.628
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▄▁▄▄▅▁▅▅▅▅█▆▅▄-18.046-22.029-18.184-18.857-17.208-22.735-17.3-17.347-17.517-16.917-12.76-15.786-16.844-18.856NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingIncomeLoss ▂▁▃▃▃▁▃▄▄▃▄▄▃▃▃▂▂▂▂▃▂▂▃▃▃▄▇▆▅▅▇█▇▇████████▇▆▇-16.306-20.59-13.426-16.163-15.139-21.352-15.071-12.512-12.145-13.61-9.609-11.866-12.993-14.747-12.815-17.75-16.71-17.668-16.258-13.116-18.05-17.974-15.04-15.866-12.868-11.723-2.316-3.72-7.871-8.50.4091.3950.780.6892.2611.8121.9792.1512.692.5892.081.242-0.299-3.788-0.965
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▆▅▇▆▆▆▆▅▆▅▅▆▄▇▇▆█▆▄▆▅▇▅▆▇▁▂▃▆▆0.157-0.6080.4310.1330.086-0.170.213-0.6580.178-0.27-0.208-0.088-0.7890.5270.4020.3291.1160.26-1.1320.176-0.3940.756-0.5330.2230.788-2.556-2.249-1.6130.203-0.026NA-1.4360.177NANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▆▅▇▆▆▆▆▅▆▅▅▆▄▇▇▇█▆▄▆▅▇▅▆▇▁▄▃▆▆▆▆▆▆▆▆▆▆▆▆▆0.157-0.6080.4310.1330.086-0.170.213-0.6580.178-0.27-0.208-0.088-0.7890.5270.3930.3351.1190.247-1.1440.168-0.3730.761-0.5510.2470.787-2.556-0.813-1.6130.203-0.0260.00.00.00.00.00.00.00.00.00.00.0NANANANA
us-gaap:OtherNonoperatingIncomeExpense ▄▅▃▄▅▇▅▁▁██▆▅▅▄▅▄▄▄▄▄▄▄▄▃▃▂▃▂▁▄▄▄▄▄▄▄▄▄▄▄0.0040.286-0.2020.1220.1460.8310.247-1.01-0.8621.2711.1880.5210.2440.2020.0690.347-0.0640.0320.101-0.026-0.055-0.058-0.09-0.152-0.207-0.212-0.642-0.466-0.571-0.972-0.1150.083-0.129-0.103-0.042-0.015-0.1290.022-0.108-0.09-0.021NANANANA
us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax ▇▇▇▇█████▇▆▆▅▅▅▅▄▄▄▄▄▄▅▄▅▅▆▅▅▄▄▄▄▃▃▃▃▃▂▂▂▂▂▁▁62.40161.37860.85861.50863.74766.31166.17564.1563.87856.13152.61349.07547.42647.9146.34441.93740.40640.12939.92638.38437.03837.92842.01240.86641.68943.67953.82946.71944.36840.91338.87136.81335.52733.62632.72329.91328.13427.02126.2425.20823.78521.40620.19315.68617.839
us-gaap:Revenues ▇▇▇▇█████▇▆▆▅▅▅▅▄▄▄▄▄▄▅▄▅▅▆▅▅▄▄▄▄▃▃▃▃▃▂▂▂▂▂▁▁62.40161.37860.85861.50863.74766.31166.17564.1563.87856.13152.61349.07547.42647.9146.34441.93740.40640.12939.92638.38437.03837.92842.01240.86641.68943.67953.82946.71944.36840.91338.87136.81335.52733.62632.72329.91328.13427.02126.2425.20823.78521.40620.19315.68617.839
us-gaap:SellingAndMarketingExpense ▆▆▅▆▆█▇▆▇▆▄▃▄▃▃▃▃▃▃▁▃▄▄▅▄▄▃▂▂▁21.1921.56419.321.95121.01124.9223.52321.622.94521.48518.33517.51318.5917.56817.49116.9817.17216.47316.25513.64116.06618.01818.33619.63917.97818.19317.30415.25215.39414.206NANANANANANANANANANANANANANANA
  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 ▇███▆▇▇▇▇▆▆▆▄▄▄▄▄▃▃▃▃▃▃▄▄▄▄▂▂▂▂▂▂▂▂▂▁▁▁▁▁511.503535.088539.971551.442427.278456.677513.307518.738507.899444.991436.967429.176281.44280.469288.683292.629297.982210.727227.654230.96240.929250.383263.722271.155279.523275.289300.125181.952181.727186.455179.828162.037152.747152.396146.479141.148125.762118.651121.259112.463106.24NA98.128NANA
us-gaap:Liabilities ██▇▇▅▅▆▆▇▇▆▆▆▅▅▅▅▄▄▄▄▄▄▃▃▃▃▂▂▂▁▁▁▁▁▁▁▁▁▁▁485.775500.059422.934422.408309.108327.067348.311362.786412.405414.521382.068366.165350.099335.608335.662328.04318.445230.597231.048220.98219.233213.628208.308204.055201.003189.013201.12684.09784.487.29568.52557.4853.66159.1457.8156.45645.39741.45747.31642.39939.92NA38.625NANA
us-gaap:LiabilitiesAndStockholdersEquity ▇███▆▇▇▇▇▆▆▆▄▄▄▄▄▃▃▃▃▃▃▄▄▄▄▂▂▂▂▂▂▂▂▂▁▁▁▁▁511.503535.088539.971551.442427.278456.677513.307518.738507.899444.991436.967429.176281.44280.469288.683292.629297.982210.727227.654230.96240.929250.383263.722271.155279.523275.289300.125181.952181.727186.455179.828162.037152.747152.396146.479141.148125.762118.651121.259112.463106.24NA98.128NANA
us-gaap:StockholdersEquity ▄▄▇▇▇▇██▆▄▅▅▁▁▂▂▂▂▃▃▄▄▅▅▅▆▆▆▆▆▆▆▆▆▆▆▅▅▅▅▅25.72835.029117.037129.034118.17129.61164.996155.95295.49430.4754.89963.011-68.659-55.139-46.979-35.411-20.463-19.87-3.3949.9821.69636.75555.41467.178.5286.27698.99997.85597.32799.16111.303104.55799.08693.25688.66984.69280.36577.19473.94370.06466.32NA59.503NANA
  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 ▇███▅▆███▆▇▆▃▃▃▃▄▂▃▃▃▃▄▄▄▄▄▁▁▁▂▂▂▂▂▂▁▁▁▁▁374.876394.145394.3405.219289.313320.596385.945389.327395.25329.172346.143338.595189.787187.175202.056204.123244.238157.417173.657179.313189.331197.839211.041216.951224.604220.422240.289107.936105.448107.861137.129141.807131.821131.403127.426124.413111.612107.303110.674102.25896.734NA89.49NANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ████▅▆▇██▇▇▇▄▄▄▄▅▃▃▃▃▃▄▃▄▄▄▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂318.326323.929329.134322.352220.157251.782306.077319.162329.562272.636295.476281.889141.867148.146160.505157.359197.969111.868118.03995.208103.151118.7161.77134.948145.831141.66161.01940.41330.03447.0444.68890.77488.22782.46283.55872.64471.16270.91368.45766.40364.39661.49955.84553.06360.771
us-gaap:AccountsReceivableNetCurrent 41.295NA53.7NANANA65.288NANANA42.8NANANA33.244NANANA34.045NANANA39.701NANANA71.963NANANA47.626NANANA39.561NANANA34.994NANANANANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▅▆▅▅▅▅▅▅▄▃▂▃▂▄▅▇▃▃▃▃▄▃▄▅▄▄▄█▆▄▃▃▃▃▂▂▁9.37610.6689.6479.018.5919.3949.0388.7647.6926.4444.7567.1235.5187.2949.06712.1237.0116.8056.3376.717.4566.2037.6568.9167.2637.9438.07513.0910.8667.8426.1576.4066.0416.1995.0674.8163.922NA8.353NANANANANANA
  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 NANA64.3NANANA42.496NANANA42.666NANANA37.109NANANA35.939NANANA32.844NANANA31.873NANANA27.539NANANA22.066NANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ComputerEquipmentNANA17.333NANANA15.388NANANA19.644NANANA18.95NANANA20.321NANANA19.069NANANA15.662NANANA10.857NANANA9.477NANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ComputerSoftwareIntangibleAssetNANA7.646NANANA7.302NANANA5.432NANANA5.43NANANA5.907NANANA5.238NANANA5.068NANANA4.322NANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgressNANA0.147NANANA0.794NANANA0.02NANANA0.019NANANA0.098NANANA0.055NANANA0.005NANANA0.305NANANA0.532NANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:FurnitureAndFixturesNANA6.248NANANA3.227NANANA3.208NANANA2.958NANANA2.934NANANA2.869NANANA2.874NANANA2.423NANANA2.371NANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNANA20.709NANANA5.591NANANA5.587NANANA5.65NANANA5.601NANANA5.613NANANA5.625NANANA4.568NANANA3.55NANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:SoftwareDevelopmentNANA12.217NANANA10.194NANANA8.775NANANA4.102NANANA1.078NANANA0.0NANANA2.639NANANA5.064NANANA2.013NANANANANANANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA27.796NANANA27.702NANANA27.99NANANA23.102NANANA20.701NANANA17.067NANANA16.085NANANA11.952NANANA-9.278NANANA-8.209NANANANANANA
us-gaap:PropertyPlantAndEquipmentNet ████▇▆▃▃▃▄▃▃▃▃▃▃▃▃▃▃▃▃▄▄▄▃▄▄▄▄▄▃▃▃▃▂▂▁▁▁▁34.26735.62936.50435.99433.66226.70314.79413.97215.12815.92214.67614.85514.85614.79914.00714.47114.61414.78915.23815.45615.4915.27815.77716.33815.78515.17515.78817.44616.76117.7515.58714.91114.83814.70912.78810.6987.9955.3194.7034.2053.832NA3.248NANA
us-gaap:Goodwill ████████▆▆▆▆▆▆▆▆▃▃▃▃▃▃▃▃▃▃▃▃▄▄▁49.69849.56350.04449.5649.11648.91249.10448.87838.16138.02838.23138.37338.44338.76438.45838.30920.90820.24520.09620.71820.62320.84720.44520.74720.61420.29721.56322.09723.35223.3067.024NANANA0.0NANANANANANANANANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▁▁▂▂▃▃▄▄▄▄▅▆▆▇▇█▃▃▃▃▃▃▃▄▄▄▅▆▇▇▂6.5967.4678.3419.86911.39812.95414.60516.19115.84517.47519.35421.22922.92125.05726.92928.97211.84412.07412.6512.11412.78613.71414.19115.4217.017.73620.19521.91924.22725.5328.232NANANA0.0NANANANANANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet NANA8.341NANANA14.605NANANA19.354NANANA26.929NANANA12.65NANANA14.191NANANA20.195NANANA8.232NANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass pro:MaintenancerelationshipNANA0.349NANANA0.661NANANA0.997NANANA1.358NANANA1.591NANANA2.064NANANA2.803NANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CustomerRelationshipsNANA2.369NANANA3.961NANANA4.918NANANA7.358NANANA1.882NANANA2.448NANANA3.454NANANA3.463NANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:DevelopedTechnologyRightsNANA5.623NANANA9.186NANANA11.694NANANA16.463NANANA7.552NANANA9.67NANANA12.485NANANA4.573NANANANANANANANANANANANANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANA0.13NANANA0.119NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ▇███▆▇▇▇▆▇▁27.63229.04430.68931.0323.16925.70726.5528.54823.21525.0030.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ███▇▇█▇▇▆▆▅▅▅▄█▇▇▇▆▃▃▃▂▁▁▁▂▂▁▁▁▆▆▆▆▆▆▆▆▆▆7.2387.5057.5496.7966.97.1636.8316.655.8325.535.194.6434.4674.2397.2336.7546.3786.2026.0133.3592.6992.7052.2681.6991.521.6592.291.711.3341.4011.2515.3195.7595.9555.9365.7085.8265.75.5535.6715.345NA5.097NANA
  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 ▃▃▂█▅▇▅▄▄▄▄▃▂▂▁▂▃▃▁▁▂▄▄▄▅▄▆▆▇▇▄▃▂▃▂▃▁▂▂▂▁5.2656.3174.24614.0148.50612.7579.0987.0036.9487.5626.9345.5424.7253.6062.9764.2035.36.2532.7443.4064.7186.6798.2736.779.358.1310.56410.06112.24912.4737.8396.0124.5325.7433.7755.9312.64.7174.9154.3763.198NA2.131NANA
us-gaap:AccruedLiabilitiesCurrent ▅▆▅▄▆▇█▆▅▅▄▃▃▂▃▃▄▃▃▂▂▂▂▂▂▂▂▃▃▃▂▂▂▂▂▂▁12.78616.73413.06511.90617.718.73422.74817.43313.31412.3529.5066.3138.8285.3296.7337.69310.427.4837.2795.2354.8835.364.3334.1325.2135.5515.3558.9288.6538.7985.215.0654.1294.4183.2583.8811.462NA1.318NANANANANANA
us-gaap:LiabilitiesCurrent ▄▄▄▄▄▅▅▆▅██▄▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁148.032160.384147.918159.616158.658177.803196.134214.851179.016287.229274.75128.734115.215101.147102.02598.396.80894.43496.72189.70789.20991.64186.35484.25982.22373.94688.38680.01377.64779.9465.00253.72349.50255.38154.47653.68242.27138.64744.46641.16139.046NA37.164NANA
us-gaap:OperatingLeaseLiabilityCurrent ▇▇▇▆████▆▆▁6.2035.8975.9375.1327.2867.3837.1737.2225.3265.6880.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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:OtherLiabilitiesNoncurrent ▃▃▃▃▃▃▃▂▁▁▁▂▂▂▂▂▁▁▁▁▁▂▂▂▂▂▂▃██▁▂▂▃▃1.4681.4491.5171.331.2821.261.2811.0320.7510.740.7540.8150.8190.8530.8430.7560.6550.6280.6390.6870.710.9380.9181.0141.0350.9411.1711.4453.3163.4840.5460.971.011.3271.327NANANA0.126NANANANANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ▇██▇▅▄▅▅▄▄▁40.83742.52944.09935.21824.14421.68322.39123.37719.41520.3460.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo ██▁▁11.37411.35810.37410.316NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree ▁▁██5.3835.36811.37811.323NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour ▁▁██4.2534.2495.4185.365NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive ▁▁█▇4.1344.1314.2654.249NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive ▁▁██27.72627.72631.86731.857NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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 ▄▄▇▇▇▇██▆▄▅▅▁▁▂▂▂▂▃▃▄▄▅▅▅▆▆▆▆▆▆▆▆▆▆▆▅▅▅▅▅25.72835.029117.037129.034118.17129.61164.996155.95295.49430.4754.89963.011-68.659-55.139-46.979-35.411-20.463-19.87-3.3949.9821.69636.75555.41467.178.5286.27698.99997.85597.32799.16111.303104.55799.08693.25688.66984.69280.36577.19473.94370.06466.32NA59.503NANA
us-gaap:CommonStockValue ██████▇▇▆▅▅▅▃▃▃▃▃▃▃▃▃▃▂▂▃▃▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁0.0490.0490.0480.0480.0480.0480.0470.0470.0450.0420.0420.0420.0370.0370.0360.0360.0360.0360.0350.0350.0350.0350.0340.0340.0350.0350.0340.0340.0340.0340.0330.0330.0320.0320.0320.0320.0320.0320.0310.0310.031NA0.031NANA
us-gaap:AdditionalPaidInCapital ▇▇███▇█▇▆▅▅▅▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁526.926518.338589.04583.284553.696548.014560.496518.456439.995357.635364.877360.021212.481208.368207.924202.905196.962179.161175.678169.395165.571159.73158.674152.078145.562138.437134.375112.332106.044100.163106.88100.27395.79590.54487.69385.13982.169NA77.934NANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▁▁▁▂▂▂▃▃▃▃▄▄▄▄▄▅▅▅▅▆▆▆▇▇▇▇▇██████████████-467.518-449.472-438.773-420.589-401.732-384.524-361.789-344.489-327.142-309.625-292.708-279.948-264.161-247.317-238.185-221.205-199.979-180.466-160.259-141.746-126.038-105.511-85.034-67.303-49.121-33.453-19.223-1.0762.8799.87318.32818.18917.19716.61814.88213.4712.11311.1189.9277.8065.874NA3.577NANA
 us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:AdjustmentsForNewAccountingPronouncements pro:AccountingStandardsUpdate202006NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:AdjustmentsForNewAccountingPronouncements us-gaap:AccountingStandardsUpdate202006NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▂▂▃▂▂▂▂▂▃▃▃▃▄▅▄▃▃▁▁▃▂▃▂▃▂▁▅▆███-3.882-4.039-3.431-3.862-3.995-4.081-3.911-4.124-3.466-3.644-3.374-3.166-3.078-2.289-2.816-3.209-3.544-4.663-4.91-3.766-3.934-3.561-4.322-3.771-4.018-4.805-2.249-1.4210.157-0.0260.0NANANA0.0-0.011-0.011-0.011-0.011-0.011-0.011NA-0.011NANA
us-gaap:TreasuryStockValue ███████▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁29.84729.84729.84729.84729.84729.84729.84713.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.93813.938NA13.938NANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▇▃▄▃▄▄▃▃▃▁▁▂▃8.5888.1535.9036.3615.7316.3276.4246.1895.9416.0545.1134.9495.55.991NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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 ▄▅█▃▁▁█▆▅▄█▅▅▄▆▄▄▃▄▆▄▅▇▆▆▅▅▇▃▆▆▆▆▆█▆▆▆▆▆▆▆▆▄-4.985-4.42912.452-14.886-22.782-24.17312.8524.037-3.549-8.09515.188-1.175-3.578-4.7324.535-8.539-9.116-12.193-7.1862.213-6.608-2.7648.7284.8273.411-1.434-1.35312.193-12.4953.4095.8123.2256.6731.26113.7833.93.5453.4243.1582.4632.695.9322.203-7.532NA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▃▅▆█▅▅▃▇▄▆▄▆▅▅▇▁▅▅▅▅▅▅▅▅▅▅▅▅▅-0.785-1.801-5.531-4.925-8.599-11.405-2.439-11.828-1.764-1.529-1.166-1.421-1.577-2.094-0.902-29.424-0.9478.92730.123-10.688-8.871-35.96818.141-14.2820.432-13.7150.974-2.135-3.77912.806-54.194-0.866-1.962-1.744-2.758-2.69-3.048-1.031-1.07-0.622-0.248-1.025-0.263-0.36NA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▂▂▇▂▁▁▂▅▁▂█▂▂▂▂▆▂▂▂▂▂▂▂▂▂▇▂▂▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂0.01.244-0.491122.262-0.049-18.808-23.815-2.17662.278-13.296-0.257142.597-1.384-5.604-0.507-2.35796.384-2.8660.2460.516-0.081-4.3650.064-1.4720.05-4.196120.998-0.055-0.826-13.8122.2960.1881.054-0.613-0.1110.272-0.2480.063-0.0340.1660.4550.7470.8420.184NA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▃▃▄█▂▁▃▃▆▂-5.603-5.2056.782102.195-31.625-54.295-13.085-10.456.926-22.84NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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:AmortizationOfFinancingCosts ██▇▆▆▆▆▇████████▇▇▇▇▇▇▁▇▇▅▅▅▅0.3730.3730.2450.1740.1580.1560.1650.2860.3410.3650.3610.3570.3520.3490.3450.340.2280.2140.2110.2090.2070.204-0.5420.1990.1980.01250.00850.01250.0125NA0.01250.01250.013NANANANANANANANANANANANA
us-gaap:DepreciationDepletionAndAmortization ▆▆██▇▇█▇▇▇▇▇▇▇▇▆▄▄▄▅▅▅▅▇▅▅▅▅▆▅▂▂▂▂▁▁3.0243.0683.753.6513.5133.423.6063.4353.5043.3253.273.1653.2563.3643.4843.0421.9722.0332.1112.4232.5082.4652.4723.1522.3762.3952.4762.5512.8252.5911.2271.0811.0320.9670.740.608NANANANANANANANANA
us-gaap:IncreaseDecreaseInAccountsPayable ▆▇▁█▇▆▇▆▆▆▆▆▆▆▆▆▆▇▆▆▅▆▆▅▆▅▆▅▆▆▆▆▆▆▆▇▅▆▆▆▇▆▆▆-1.1132.012-14.1615.7472.151.4472.9810.076-1.1330.5651.3620.841.0390.69-1.034-1.104-0.7933.631-0.359-1.092-2.2550.801-0.719-1.6150.203-1.9180.118-3.344-0.1010.2230.6941.476-0.3551.07-0.9272.602-2.282-0.1830.4920.8241.969-0.7060.524-1.215NA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄▅█▃▁▁█▆▅▄█▅▅▄▆▄▄▃▄▆▄▅▇▆▆▅▅▇▃▆▆▆▆▆█▆▆▆▆▆▆▆▆▄-4.985-4.42912.452-14.886-22.782-24.17312.8524.037-3.549-8.09515.188-1.175-3.578-4.7324.535-8.539-9.116-12.193-7.1862.213-6.608-2.7648.7284.8273.411-1.434-1.35312.193-12.4953.4095.8123.2256.6731.26113.7833.93.5453.4243.1582.4632.695.9322.203-7.532NA
us-gaap:NetIncomeLoss ▂▁▂▂▃▁▃▃▂▃▄▃▃▂▃▁▂▂▂▃▂▂▂▂▃▃▂▆▅▅▇████████████▇▇-18.046-22.029-18.184-18.857-17.208-22.735-17.3-17.347-17.517-16.917-12.76-15.786-16.844-18.856-16.98-21.226-19.513-20.207-18.513-15.708-20.527-20.477-17.731-18.182-15.668-14.23-17.459-3.734-6.996-8.4550.1390.9930.581.7341.4241.3560.9951.1912.1211.9321.4410.8560.631-2.405-0.628
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▄▁▄▄▅▁▅▅▅▅█▆▅▄-18.046-22.029-18.184-18.857-17.208-22.735-17.3-17.347-17.517-16.917-12.76-15.786-16.844-18.856NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ShareBasedCompensation ██▆▆▅▆▆▆▆▆▅▅▅▆▅▅▆▆▆▃▅▅▆▆▇▇▆▆▆▄▄▄▄▃▃▂▂▂▂▂▂▂▂▁8.6068.175.9226.3785.7526.3476.4466.2095.9796.0465.0984.9575.4625.9365.1315.5715.9326.1626.0213.1925.8695.3846.4836.6317.0057.7456.1356.1345.9894.4074.454.2634.1393.422.6832.492.442.0321.8241.6471.6051.7562.5031.05NA
  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 ▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▃▅▆█▅▅▃▇▄▆▄▆▅▅▇▁▅▅▅▅▅▅▅▅▅▅▅▅▅-0.785-1.801-5.531-4.925-8.599-11.405-2.439-11.828-1.764-1.529-1.166-1.421-1.577-2.094-0.902-29.424-0.9478.92730.123-10.688-8.871-35.96818.141-14.2820.432-13.7150.974-2.135-3.77912.806-54.194-0.866-1.962-1.744-2.758-2.69-3.048-1.031-1.07-0.622-0.248-1.025-0.263-0.36NA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▁▂▄▄▆█▂▂▂▁▁▁▁▁▁▁▁▁▁▂▂▃▂▃▁▂▂▂▃▂▁▁▂▂▁▃▃▂▂▁▁▁▁▁0.7851.34.9424.3538.20510.9931.9111.0531.6960.6110.0690.2190.4090.7780.0510.540.2110.4840.7171.1851.8173.5221.9383.0060.741.111.2091.772.8641.6560.7650.4641.2240.9480.7452.693.0481.0311.070.6220.6130.6970.2630.36NA
  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 ▂▂▂▇▂▁▁▂▅▁▂█▂▂▂▂▆▂▂▂▂▂▂▂▂▂▇▂▂▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂0.01.244-0.491122.262-0.049-18.808-23.815-2.17662.278-13.296-0.257142.597-1.384-5.604-0.507-2.35796.384-2.8660.2460.516-0.081-4.3650.064-1.4720.05-4.196120.998-0.055-0.826-13.8122.2960.1881.054-0.613-0.1110.272-0.2480.063-0.0340.1660.4550.7470.8420.184NA
  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 pro:InterestRate,us-gaap:Range pro:FederalFundsRate,srt:MaximumNANA2.25e-06NANANA2.25e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage pro:InterestRate,us-gaap:Range pro:FederalFundsRate,srt:MinimumNANA1.5e-06NANANA1.5e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage pro:InterestRate,us-gaap:Range pro:LiborRate,srt:MaximumNANA2.25e-06NANANA2.25e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage pro:InterestRate,us-gaap:Range pro:LiborRate,srt:MinimumNANA1.5e-06NANANA1.5e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument pro:Notesdue2024▄▄▄▄1e-061e-061e-061e-06NANA1e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value49000.049000.048000.048000.048000.048000.047000.047000.045000.042000.042000.042000.037000.037000.036000.036000.036000.036000.035000.035000.035000.035000.034000.034000.035000.035000.034000.034000.034000.034000.033000.033000.032000.032000.032000.032000.032000.032000.031000.031000.031000.031000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value4948484847474746444241413737363636353534343434343433333333333232323131313131313130
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value4444434343434242403737373232313131313030303029292929292928282828282727272727262626
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of 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
Value44444343434139373532323131313030302929292928283029292828282727272626
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
Value44444343434139373532323131313030302929292928282828272727272626262626
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

Weighted Average Number Of Share Outstanding Basic And Diluted

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-31
Value4444434343413937353232313131303030
Percentage of WeightedAverageNumberOfShareOutstandingBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:ConvertibleDebtSecurities


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value5800000.05800000.05800000.02200000.02200000.03100000.04800000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockCompensationPlan


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value1200000.01200000.01300000.01200000.01600000.02100000.02000000.02000000.02200000.02100000.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount20.720.722.454.572.767.741.70.00.00.0

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
Value-0.41-0.5-0.42-0.44-0.4-0.53-0.41-0.42-0.44-0.45-0.34-0.44-0.52-0.58-0.53-0.67-0.62-0.65-0.61-0.52-0.68-0.68-0.6-0.61-0.53-0.48-0.6-0.13-0.24-0.2900.040.020.060.050.050.040.040.080.070.050.030.03-0.09-0.02
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value-0.41-0.5-0.42-0.44-0.4-0.53-0.41-0.42-0.44-0.45-0.34-0.44-0.52-0.58-0.53-0.67-0.62-0.65-0.61-0.52-0.68-0.68-0.6-0.61-0.53-0.48-0.6-0.13-0.24-0.2900.030.020.060.050.050.040.040.080.070.050.030.03-0.09-0.02
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic And Diluted

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:EarningsPerShareBasicAndDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-0.41-0.5-0.42-0.44-0.4-0.53-0.41-0.42-0.44-0.45-0.33-0.44-0.52-0.58-0.53-0.67-0.62-0.65-0.6-0.52-0.68-0.68
Percentage of EarningsPerShareBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value8.6068.175.9226.3785.7526.3476.4466.2095.9796.0465.0984.9575.4625.9365.1315.5715.9326.1626.0213.1925.8695.3846.4836.6317.0057.7456.2866.0755.9454.3594.2774.2644.1393.422.6832.492.442.0321.8241.6471.605
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax13.813.39.710.49.09.69.79.79.410.89.710.111.512.411.113.314.715.415.18.315.814.215.416.216.817.711.713.013.410.711.011.611.710.28.28.38.77.57.06.56.7

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation

us-gaap:CostOfSales


Allocated
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
Value0.9760.8260.5870.5190.5020.5240.490.5030.4940.5380.3960.4450.3980.4820.4020.4790.5150.5750.5470.5440.5770.5990.8230.8521.0311.013
Percentage of AllocatedShareBasedCompensationExpense11.310.19.98.18.78.37.68.18.38.97.89.07.38.17.88.68.79.39.117.09.811.112.712.814.713.1
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax1.61.31.00.80.80.80.70.80.81.00.80.90.81.00.91.11.31.41.41.41.61.62.02.12.52.3
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:CostOfSales0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:GeneralAndAdministrativeExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value3.0033.2942.712.5931.9172.452.932.9012.8082.8122.5152.6352.6882.8792.6172.8642.882.8022.7732.2352.3021.732.2932.282.3723.3483.662.1982.0341.483
Percentage of AllocatedShareBasedCompensationExpense34.940.345.840.733.338.645.546.747.046.549.353.249.248.551.051.448.645.546.170.039.232.135.434.433.943.258.236.234.234.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax4.85.44.54.23.03.74.44.54.45.04.85.45.76.05.66.87.17.06.95.86.24.65.55.65.77.76.84.74.63.6
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:GeneralAndAdministrativeExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingExpense


Allocated
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-31
Value7.637.3445.8595.255.8235.7065.4855.5084.5125.0645.4545.0925.4175.5872.6485.2924.7855.7795.9746.732
Percentage of AllocatedShareBasedCompensationExpense88.789.991.991.391.791.991.791.191.092.791.991.491.390.783.090.288.987.285.386.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax12.212.09.58.28.88.98.69.89.210.711.412.113.413.96.914.312.614.114.315.4
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:OperatingExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ResearchAndDevelopmentExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2.1171.8261.6471.5391.3681.5071.361.291.2631.2961.1381.0981.0921.2911.0771.3191.4061.5121.4361.3311.2931.2751.3721.271.3221.3521.2541.2441.2160.9650.8480.7880.7670.736
Percentage of AllocatedShareBasedCompensationExpense24.622.427.824.123.823.721.120.821.121.422.322.220.021.721.023.723.724.523.841.722.023.721.219.218.917.519.920.520.522.119.818.518.521.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax3.43.02.72.52.12.32.12.02.02.32.22.22.32.72.33.13.53.83.63.53.53.43.33.13.23.12.32.72.72.42.22.12.22.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ResearchAndDevelopmentExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SellingAndMarketingExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value2.512.2240.9781.7271.9651.8661.6661.5151.4141.41.0490.7791.2841.2841.0350.9091.1311.2731.265-0.9181.6971.781.9952.2292.282.0320.4491.7691.7361.189
Percentage of AllocatedShareBasedCompensationExpense29.227.216.527.134.229.425.824.423.623.220.615.723.521.620.216.319.120.721.0-28.828.933.130.833.632.526.27.129.129.227.3
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax4.03.61.62.83.12.82.52.42.22.52.01.62.72.72.22.22.83.23.2-2.44.64.74.75.55.54.70.83.83.92.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:SellingAndMarketingExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-17889000.0-22637000.0-17753000.0-18724000.0-17122000.0-22905000.0-17087000.0-18005000.0-17339000.0-17187000.0-12968000.0-15874000.0-17633000.0-18329000.0-16587000.0-20891000.0-18394000.0-19960000.0-19657000.0-15540000.0-20900000.0-19716000.0-18282000.0-17935000.0-14881000.0-16786000.0-18272000.0-5312000.0-6813000.0-8481000.0139000.0993000.0580000.01734000.01424000.01356000.0995000.01191000.02121000.01932000.01441000.0856000.0
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-28.7-36.9-29.2-30.4-26.9-34.5-25.8-28.1-27.1-30.6-24.6-32.3-37.2-38.3-35.8-49.8-45.5-49.7-49.2-40.5-56.4-52.0-43.5-43.9-35.7-38.4-33.9-11.4-15.4-20.70.42.71.65.24.44.53.54.48.17.76.14.0

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value262625242528282623201919181918171616151516151515151516131414101110
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax42.343.241.640.140.743.342.941.136.937.037.039.739.540.739.242.339.841.440.040.843.341.436.737.437.734.330.129.431.935.627.730.030.4

us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService

pro:SubscriptionMaintenanceAndSupport


Cost
Period End2021-06-302021-03-312020-06-302020-03-31
Value15161515
Percentage of CostOfGoodsAndServicesSold59.660.657.854.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax25.226.223.523.6
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax pro:SubscriptionMaintenanceAndSupport29.830.727.728.1

us-gaap:Maintenance


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value2.1572.2582.3032.1772.612.792.7832.6322.8352.8022.842.8522.953
Percentage of CostOfGoodsAndServicesSold8.28.59.18.810.19.79.810.012.013.514.614.615.8
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax3.53.73.83.54.14.24.24.14.45.05.45.86.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:Maintenance25.223.30.020.222.222.30.018.318.818.30.017.618.2

us-gaap:Service


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value10109.4969.56310131312108.2027.5077.5087.216
Percentage of CostOfGoodsAndServicesSold40.439.437.538.842.245.549.148.046.339.538.638.638.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax17.117.015.615.517.219.721.119.717.114.614.315.315.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:Service110.9115.20.0109.7113.7123.10.0113.579.683.00.095.685.2

us-gaap:SubscriptionAndCirculation


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value13131312121211119.7799.7869.069.0538.491
Percentage of CostOfGoodsAndServicesSold51.552.153.452.347.844.840.741.841.547.146.646.545.3
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax21.822.522.221.019.419.417.417.215.317.417.218.417.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:SubscriptionAndCirculation30.732.40.030.729.229.80.029.529.631.60.037.938.5

Cost Of Revenue

us-gaap:CostOfRevenue

us-gaap:CostOfRevenue


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value262625242528282623201919181918171616151516151515151516131414101110
Percentage of CostOfRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax42.343.241.640.140.743.342.941.136.937.037.039.739.540.739.242.339.841.440.040.843.341.436.737.437.734.330.129.431.935.627.730.030.4

General And Administrative Expense

us-gaap:GeneralAndAdministrativeExpense

us-gaap:GeneralAndAdministrativeExpense


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value11131011131411111211101010109.822109.78210109.2539.6169.0418.7319.6269.56210119.178.8738.249
Percentage of GeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax17.721.917.619.421.222.418.118.018.820.819.620.721.422.321.224.624.225.926.624.126.023.820.823.622.924.321.319.620.020.2

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
Value353435363737373740353329282828242423232220222625252839323026282524232321201918181715141013
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 RevenueFromContractWithCustomerIncludingAssessedTax57.756.858.459.959.356.757.158.963.163.063.060.360.559.360.857.760.258.660.059.256.758.663.362.662.365.773.070.668.165.872.370.069.668.670.471.073.370.772.474.672.970.40.066.373.0

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments


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
Value-17878000.0-21880000.0-18108000.0-18539000.0-17078000.0-22583000.0-17242000.0-17239000.0-17281000.0-16695000.0-12736000.0-15611000.0-16975000.0-18724000.0-16886000.0-21497000.0-19364000.0-20030000.0-18533000.0-15481000.0-20422000.0-20319000.0-17402000.0-18252000.0-15298000.0-14120000.0-2958000.0-4186000.0-8442000.0-9472000.0558000.01478000.0651000.0586000.02219000.01797000.01850000.02152000.02692000.02590000.02092000.01260000.0-258000.0-3764000.0-947000.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-28.7-35.6-29.8-30.1-26.8-34.1-26.1-26.9-27.1-29.7-24.2-31.8-35.8-39.1-36.4-51.3-47.9-49.9-46.4-40.3-55.1-53.6-41.4-44.7-36.7-32.3-5.5-9.0-19.0-23.21.44.01.81.76.86.06.68.010.310.38.85.90.0-24.0-5.3

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
Value0.1680.1490.0760.3180.130.1520.0580.1080.2360.2220.0240.175-0.1310.1320.094-0.2710.1490.177-0.020.2270.1050.1580.329-0.070.370.1114-0.257-1.24-0.560.4190.4850.071-1.1480.7950.4410.8550.9610.5710.6580.6510.404-0.889-1.359-0.319
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 RevenueFromContractWithCustomerIncludingAssessedTax0.30.20.10.50.20.20.10.20.40.40.00.4-0.30.30.2-0.60.40.4-0.10.60.30.40.8-0.20.90.327.0-0.6-2.8-1.41.11.30.2-3.42.41.53.03.62.22.62.71.90.0-8.7-1.8

Interest Expense Debt

us-gaap:InterestExpenseDebt

us-gaap:InterestExpenseDebt


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1.5761.5764.482.4982.0852.0622.4183.7174.2744.3564.3154.2664.2264.1794.144.0942.592.3942.3762.3392.3172.2872.2722.2342.2232.185
Percentage of InterestExpenseDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax2.52.67.44.13.33.13.75.86.77.88.28.78.98.78.99.86.46.06.06.16.36.05.45.55.35.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-18046000.0-22029000.0-18184000.0-18857000.0-17208000.0-22735000.0-17300000.0-17347000.0-17517000.0-16917000.0-12760000.0-15786000.0-16844000.0-18856000.0-16980000.0-21226000.0-19513000.0-20207000.0-18513000.0-15708000.0-20527000.0-20477000.0-17731000.0-18182000.0-15668000.0-14230000.0-17459000.0-3734000.0-6996000.0-8455000.0139000.0993000.0580000.01734000.01424000.01356000.0995000.01191000.02121000.01932000.01441000.0856000.0631000.0-2405000.0-628000.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-28.9-35.9-29.9-30.7-27.0-34.3-26.1-27.0-27.4-30.1-24.3-32.2-35.5-39.4-36.6-50.6-48.3-50.4-46.4-40.9-55.4-54.0-42.2-44.5-37.6-32.6-32.4-8.0-15.8-20.70.42.71.65.24.44.53.54.48.17.76.14.00.0-15.3-3.5

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


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
Value-18046000.0-22029000.0-18184000.0-18857000.0-17208000.0-22735000.0-17300000.0-17347000.0-17517000.0-16917000.0-12760000.0-15786000.0-16844000.0-18856000.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-28.9-35.9-29.9-30.7-27.0-34.3-26.1-27.0-27.4-30.1-24.3-32.2-35.5-39.4
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value-16306000.0-20590000.0-13426000.0-16163000.0-15139000.0-21352000.0-15071000.0-12512000.0-12145000.0-13610000.0-9609000.0-11866000.0-12993000.0-14747000.0-12815000.0-17750000.0-16710000.0-17668000.0-16258000.0-13116000.0-18050000.0-17974000.0-15040000.0-15866000.0-12868000.0-11723000.0-2316000.0-3720000.0-7871000.0-8500000.0409000.01395000.0780000.0689000.02261000.01812000.01979000.02151000.02690000.02589000.02080000.01242000.0-299000.0-3788000.0-965000.0
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 RevenueFromContractWithCustomerIncludingAssessedTax-26.1-33.5-22.1-26.3-23.7-32.2-22.8-19.5-19.0-24.2-18.3-24.2-27.4-30.8-27.7-42.3-41.4-44.0-40.7-34.2-48.7-47.4-35.8-38.8-30.9-26.8-4.3-8.0-17.7-20.81.13.82.22.06.96.17.08.010.310.38.75.80.0-24.1-5.4

Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-09-302013-06-30
Value157000.0-608000.0431000.0133000.086000.0-170000.0213000.0-658000.0178000.0-270000.0-208000.0-88000.0-789000.0527000.0402000.0329000.01116000.0260000.0-1132000.0176000.0-394000.0756000.0-533000.0223000.0788000.0-2556000.0-2249000.0-1613000.0203000.0-26000.0-1436000.0177000.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.3-1.00.70.20.1-0.30.3-1.00.3-0.5-0.4-0.2-1.71.10.90.82.80.6-2.80.5-1.12.0-1.30.51.9-5.9-4.2-3.50.5-0.1-3.90.5

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value157000.0-608000.0431000.0133000.086000.0-170000.0213000.0-658000.0178000.0-270000.0-208000.0-88000.0-789000.0527000.0393000.0335000.01119000.0247000.0-1144000.0168000.0-373000.0761000.0-551000.0247000.0787000.0-2556000.0-813000.0-1613000.0203000.0-26000.000000000000
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.3-1.00.70.20.1-0.30.3-1.00.3-0.5-0.4-0.2-1.71.10.80.82.80.6-2.90.4-1.02.0-1.30.61.9-5.9-1.5-3.50.5-0.10.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

pro:AccumulatedOtherComprehensiveIncomenetoftax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value157000.0-608000.0431000.0133000.086000.0-170000.0213000.0-658000.0178000.0-270000.0-208000.0-88000.0-789000.0527000.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.3-1.00.70.20.1-0.30.3-1.00.3-0.5-0.4-0.2-1.71.1
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax pro:AccumulatedOtherComprehensiveIncomenetoftax0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherNonoperatingIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value4000.0286000.0-202000.0122000.0146000.0831000.0247000.0-1010000.0-862000.01271000.01188000.0521000.0244000.0202000.069000.0347000.0-64000.032000.0101000.0-26000.0-55000.0-58000.0-90000.0-152000.0-207000.0-212000.0-642000.0-466000.0-571000.0-972000.0-115000.083000.0-129000.0-103000.0-42000.0-15000.0-129000.022000.0-108000.0-90000.0-21000.0
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.00.5-0.30.20.21.30.4-1.6-1.32.32.31.10.50.40.10.8-0.20.10.3-0.1-0.1-0.2-0.2-0.4-0.5-0.5-1.2-1.0-1.3-2.4-0.30.2-0.4-0.3-0.1-0.1-0.50.1-0.4-0.4-0.1

Revenue From Contract With Customer Including Assessed Tax

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax


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
Value626160616366666463565249474746414040393837374240414353464440383635333229282726252321201517
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:ProductOrService

pro:SubscriptionMaintenanceAndSupport


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value52525455
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax84.685.284.984.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax84.685.284.984.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax pro:SubscriptionMaintenanceAndSupport100.0100.0100.0100.0

us-gaap:Maintenance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value8.579.6749.66310111213141515151616
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax13.715.815.917.518.418.920.322.523.527.329.933.134.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax13.715.815.917.518.418.920.322.523.527.329.933.134.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:Maintenance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Service


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value9.6079.0568.2988.7149.629101211139.8837.9127.8568.468
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax15.414.813.614.215.116.018.217.421.517.615.016.017.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax15.414.813.614.215.116.018.217.421.517.615.016.017.9
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:Service100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SubscriptionAndCirculation


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value44424242424340373330282322
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax70.969.570.568.366.565.160.858.451.855.153.848.746.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax70.969.570.568.366.565.160.858.451.855.153.848.746.5
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:SubscriptionAndCirculation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value626160616366666463565249474746414040393837374240414353464440383635333229282726252321201517
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 RevenueFromContractWithCustomerIncludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:StatementGeographical

country:US


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value212019192021232120191716161716151515
Percentage of Revenues35.134.032.632.532.532.935.833.732.735.234.133.834.936.235.037.737.639.4
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax35.134.032.632.532.532.935.833.732.735.234.133.834.936.235.037.737.639.4
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax country:US0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pro:Therestoftheworld


Revenuesus-gaap:
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value2121222524232419171615131412
Percentage of Revenues35.235.536.939.837.136.238.034.035.533.831.932.335.032.1
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax35.235.536.939.837.136.238.034.035.533.831.932.335.032.1
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax pro:Therestoftheworld0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

srt:Europe


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1818-3.091817190.102191817-4.3341514
Percentage of Revenues29.730.5-5.130.627.730.10.230.129.330.8-8.230.631.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax29.730.5-5.130.627.730.10.230.129.330.8-8.230.631.2
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax srt:Europe0.00.00.00.00.00.00.00.00.00.00.00.00.0

Selling And Marketing Expense

us-gaap:SellingAndMarketingExpense

us-gaap:SellingAndMarketingExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value212119212124232122211817181717161716161316181819171817151514
Percentage of SellingAndMarketingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax34.035.131.735.733.037.635.533.735.938.334.835.739.236.737.740.542.541.140.735.543.447.543.648.143.141.732.132.634.734.7

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
Value51153553955142745651351850744443642928128028829229721022723024025026327127927530018118118617916215215214614112511812111210698
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

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
Value485500422422309327348362412414382366350335335328318230231220219213208204201189201848487685753595756454147423938
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 Assets95.093.578.376.672.371.667.969.981.293.287.485.3124.4119.7116.3112.1106.9109.4101.595.791.085.379.075.371.968.767.046.246.446.838.135.535.138.839.540.036.134.939.037.737.639.4

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
Value51153553955142745651351850744443642928128028829229721022723024025026327127927530018118118617916215215214614112511812111210698
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 End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-312008-12-31
Value253511712911812916415595305463-68.659-55.139-46.979-35.411-20.463-19.87-3.3949.9821365567788698979799111104999388848077737066595543
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.06.521.723.427.728.432.130.118.86.812.614.7-24.4-19.7-16.3-12.1-6.9-9.4-1.54.39.014.721.024.728.131.333.053.853.653.261.964.564.961.260.560.063.965.161.062.362.460.60.00.0

us-gaap:StockholdersEquity us-gaap:CumulativeEffectPeriodOfAdoption

srt:CumulativeEffectPeriodOfAdoptionAdjustment


Stockholders
Period End2021-01-01
Value-68.768
Percentage of StockholdersEquity0.0
Percentage of Assets0.0
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment0.0

us-gaap:StockholdersEquity us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:RetainedEarnings


Stockholders
Period End2021-01-01
Value11
Percentage of StockholdersEquity0.0
Percentage of Assets0.0
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:RetainedEarnings0.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

pro:AccumulatedOtherComprehensiveIncomenetoftax


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value-3.882-4.039-3.431-3.862-3.995-4.081-3.911-4.124-3.466-3.644-3.374-3.166-3.078-2.289-2.816-4.91-4.322-2.2490.00.0
Percentage of StockholdersEquity-15.1-11.5-2.9-3.0-3.4-3.1-2.4-2.6-3.6-12.0-6.1-5.04.54.26.0144.7-7.8-2.30.00.0
Percentage of Assets-0.8-0.8-0.6-0.7-0.9-0.9-0.8-0.8-0.7-0.8-0.8-0.7-1.1-0.8-1.0-2.2-1.6-0.70.00.0
Percentage of Assets pro:AccumulatedOtherComprehensiveIncomenetoftax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value5265185895835535485605184393573643602122082071751581341068777696357
Percentage of StockholdersEquity2048.11479.7503.3452.0468.6422.8339.7332.4460.81173.7664.6571.4-309.5-377.9-442.6-5176.1286.3135.796.098.9105.4117.4115.3131.8
Percentage of Assets103.096.9109.1105.8129.6120.0109.299.986.680.483.583.975.574.372.077.260.244.859.459.964.371.20.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value0.0490.0490.0480.0480.0480.0480.0470.0470.0450.0420.0420.0420.0370.0370.0360.0350.0340.0340.0330.0320.0310.0310.030.03
Percentage of StockholdersEquity0.20.10.00.00.00.00.00.00.00.10.10.1-0.1-0.1-0.1-1.00.10.00.00.00.00.10.10.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value-467.518-449.472-438.773-420.589-401.732-384.524-361.789-344.489-327.142-309.625-292.708-279.948-264.161-247.317-238.185-160.259-85.034-19.22318149.9273.5775.508-0.008
Percentage of StockholdersEquity-1817.2-1283.1-374.9-326.0-340.0-296.7-219.3-220.9-342.6-1016.2-533.2-444.3384.7448.5507.04721.8-153.5-19.416.516.813.46.010.0-0.0
Percentage of Assets-91.4-84.0-81.3-76.3-94.0-84.2-70.5-66.4-64.4-69.6-67.0-65.2-93.9-88.2-82.5-70.4-32.2-6.410.210.28.23.60.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value-29.847-29.847-29.847-29.847-29.847-29.847-29.847-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938
Percentage of StockholdersEquity-116.0-85.2-25.5-23.1-25.3-23.0-18.1-8.9-14.6-45.7-25.4-22.120.325.329.7410.7-25.2-14.1-12.5-15.7-18.8-23.4-25.3-31.9
Percentage of Assets-5.8-5.6-5.5-5.4-7.0-6.5-5.8-2.7-2.7-3.1-3.2-3.2-5.0-5.0-4.8-6.1-5.3-4.6-7.8-9.5-11.5-14.20.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value3743943944052893203853893953293463381891872022042441571731791891972112162242202401071051071371411311311271241111071101029689
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 Assets73.373.773.073.567.770.275.275.177.874.079.278.967.466.770.069.882.074.776.377.678.679.080.080.080.480.180.159.358.057.876.387.586.386.287.088.188.790.491.390.991.191.2

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value318323329322220251306319329272295281141148160157197111118951031181611341451411614030474490888283727170686664615553606251
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets62.260.561.058.551.555.159.661.564.961.367.665.750.452.855.653.866.453.151.941.242.847.461.349.852.251.553.722.216.525.224.956.057.854.157.051.556.659.856.559.060.60.056.90.00.00.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value4153654233343971473934
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.19.912.79.811.515.015.124.026.527.028.9

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
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
Value9.376109.6479.018.5919.3949.0388.7647.6926.4444.7567.1235.5187.2949.067127.0116.8056.3376.717.4566.2037.6568.9167.2637.9438.07513107.8426.1576.4066.0416.1995.0674.8163.9228.353
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.82.01.81.62.02.11.81.71.51.41.11.72.02.63.14.12.43.22.82.93.12.52.93.32.62.92.77.26.04.23.44.04.04.13.53.43.16.9

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value644242373532312722
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.98.39.812.915.812.510.615.315.1

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

us-gaap:ComputerEquipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value17151918201915109.477
Percentage of PropertyPlantAndEquipmentGross27.036.246.051.156.558.149.139.442.9
Percentage of Assets3.23.04.56.68.97.25.26.06.5
Percentage of Assets us-gaap:ComputerEquipment0.00.00.00.00.00.00.00.00.0

us-gaap:ComputerSoftwareIntangibleAsset


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value7.6467.3025.4325.435.9075.2385.0684.322
Percentage of PropertyPlantAndEquipmentGross11.917.212.714.616.415.915.915.7
Percentage of Assets1.41.41.21.92.62.01.72.4
Percentage of Assets us-gaap:ComputerSoftwareIntangibleAsset0.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value0.1470.7940.020.0190.0980.0550.0050.3050.532
Percentage of PropertyPlantAndEquipmentGross0.21.90.00.10.30.20.01.12.4
Percentage of Assets0.00.20.00.00.00.00.00.20.4
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.00.00.00.0

us-gaap:FurnitureAndFixtures


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value6.2483.2273.2082.9582.9342.8692.8742.4232.371
Percentage of PropertyPlantAndEquipmentGross9.77.67.58.08.28.79.08.810.7
Percentage of Assets1.20.60.71.01.31.11.01.31.6
Percentage of Assets us-gaap:FurnitureAndFixtures0.00.00.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value205.5915.5875.655.6015.6135.6254.5683.55
Percentage of PropertyPlantAndEquipmentGross32.213.213.115.215.617.117.616.616.1
Percentage of Assets3.81.11.32.02.52.11.92.52.4
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.00.00.0

us-gaap:SoftwareDevelopment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value12108.7754.1021.0780.02.6395.0642.013
Percentage of PropertyPlantAndEquipmentGross19.024.020.611.13.00.08.318.49.1
Percentage of Assets2.32.02.01.40.50.00.92.81.4
Percentage of Assets us-gaap:SoftwareDevelopment0.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2727272320171611-9.278-8.209
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.15.46.48.09.16.55.46.6-6.3-6.8

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
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
Value3435363533261413151514141414141414141515151515161515151716171514141412107.9955.3194.7034.2053.8323.248
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.76.76.86.57.95.82.92.73.03.63.43.55.35.34.94.94.97.06.76.76.46.16.06.05.65.55.39.69.29.58.79.29.79.78.77.66.44.53.93.73.63.3

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-08-032017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value494950494948494838383838383838381720202020202020202020212223237.0240.0
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets9.79.39.39.011.510.79.69.47.58.58.78.913.713.813.313.10.07.09.68.89.08.68.37.87.77.47.47.212.112.912.53.90.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value6.5967.4678.3419.86911121416151719212225262811121212121314151717202124258.2320.0
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.31.41.51.82.72.82.83.13.13.94.44.98.18.99.39.94.05.75.65.25.35.55.45.76.16.46.712.013.313.74.60.0

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value8.3411419261214208.232
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.52.84.49.35.65.46.74.6

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

pro:Maintenancerelationship


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value0.3490.6610.9971.3581.5912.0642.803
Percentage of FiniteLivedIntangibleAssetsNet4.24.55.25.012.614.513.9
Percentage of Assets0.10.10.20.50.70.80.9
Percentage of Assets pro:Maintenancerelationship0.00.00.00.00.00.00.0

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2.3693.9614.9187.3581.8822.4483.4543.463
Percentage of FiniteLivedIntangibleAssetsNet28.427.125.427.314.917.317.142.1
Percentage of Assets0.40.81.12.50.80.91.21.9
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.0

us-gaap:DevelopedTechnologyRights


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value5.6239.18611167.5529.67124.573
Percentage of FiniteLivedIntangibleAssetsNet67.462.960.461.159.768.161.855.6
Percentage of Assets1.01.82.75.73.33.74.22.5
Percentage of Assets us-gaap:DevelopedTechnologyRights0.00.00.00.00.00.00.00.0

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2020-12-312019-12-31
Value130000.0119000.0
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0
Percentage of Assets0.00.0

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
Value272930312325262823250.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets5.45.45.75.65.45.65.25.54.65.60.0

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
Value7238000.07505000.07549000.06796000.06900000.07163000.06831000.06650000.05832000.05530000.05190000.04643000.04467000.04239000.07233000.06754000.06378000.06202000.06013000.03359000.02699000.02705000.02268000.01699000.01520000.01659000.02290000.01710000.01334000.01401000.01251000.05319000.05759000.05955000.05936000.05708000.05826000.05700000.05553000.05671000.05345000.05097000.0
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 Assets1.41.41.41.21.61.61.31.31.11.21.21.11.61.52.52.32.12.92.61.51.11.10.90.60.50.60.80.90.70.80.73.33.83.94.14.04.64.84.65.05.05.2

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
Value5.2656.3174.246148.506129.0987.0036.9487.5626.9345.5424.7253.6062.9764.2035.36.2532.7443.4064.7186.6798.2736.779.358.13101012127.8396.0124.5325.7433.7755.9312.64.7174.9154.3763.1982.131
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 Assets1.01.20.82.52.02.81.81.41.41.71.61.31.71.31.01.41.83.01.21.52.02.73.12.53.33.03.55.56.76.74.43.73.03.82.64.22.14.04.13.93.02.2

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
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
Value121613111718221713129.5066.3138.8285.3296.7337.693107.4837.2795.2354.8835.364.3334.1325.2135.5515.3558.9288.6538.7985.215.0654.1294.4183.2583.8811.4621.318
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.53.12.42.24.14.14.43.42.62.82.21.53.11.92.32.63.53.63.22.32.02.11.61.51.92.01.84.94.84.72.93.12.72.92.22.71.21.1

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
Value148160147159158177196214179287274128115101102989694968989918684827388807779655349555453423844413937
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 Assets28.930.027.428.937.138.938.241.435.264.562.930.040.936.135.333.632.544.842.538.837.036.632.731.129.426.929.444.042.742.936.133.232.436.337.238.033.632.636.736.636.837.9

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
Value6203000.05897000.05937000.05132000.07286000.07383000.07173000.07222000.05326000.05688000.00
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets1.21.11.10.91.71.61.41.41.01.30.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value1468000.01449000.01517000.01330000.01282000.01260000.01281000.01032000.0751000.0740000.0754000.0815000.0819000.0853000.0843000.0756000.0655000.0628000.0639000.0687000.0710000.0938000.0918000.01014000.01035000.0941000.01171000.01445000.03316000.03484000.0546000.0970000.01010000.01327000.01327000.0126000.0
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.20.30.30.20.20.10.20.20.20.30.30.30.30.20.30.30.30.30.40.30.40.40.30.40.81.81.90.30.60.70.90.90.1

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
Value404244352421222319200.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets8.07.98.26.45.74.74.44.53.84.60.0

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
Value11111010
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0
Percentage of Assets2.22.11.91.9

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
Value5.3835.3681111
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0
Percentage of Assets1.11.02.12.1

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
Value4253000.04249000.05418000.05365000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0
Percentage of Assets0.80.81.01.0

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
Value4134000.04131000.04265000.04249000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0100.0100.0
Percentage of Assets0.80.80.80.8

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value27273131
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0100.0
Percentage of Assets5.45.25.95.8

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-30
Value47485040
Percentage of OperatingLeaseLiability100.0100.0100.0100.0
Percentage of Assets9.29.19.37.3

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value68707273
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0
Percentage of Assets13.313.213.513.3

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value19202122
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0
Percentage of Assets3.93.84.04.1

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-312008-12-31
Value253511712911812916415595305463-68.659-55.139-46.979-35.411-20.463-19.87-3.3949.9821365567788698979799111104999388848077737066595543
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.06.521.723.427.728.432.130.118.86.812.614.7-24.4-19.7-16.3-12.1-6.9-9.4-1.54.39.014.721.024.728.131.333.053.853.653.261.964.564.961.260.560.063.965.161.062.362.460.60.00.0

us-gaap:StockholdersEquity us-gaap:CumulativeEffectPeriodOfAdoption

srt:CumulativeEffectPeriodOfAdoptionAdjustment


Stockholders
Period End2021-01-01
Value-68.768
Percentage of StockholdersEquity0.0
Percentage of Assets0.0
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment0.0

us-gaap:StockholdersEquity us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:StatementEquityComponents

srt:CumulativeEffectPeriodOfAdoptionAdjustment, us-gaap:RetainedEarnings


Stockholders
Period End2021-01-01
Value11
Percentage of StockholdersEquity0.0
Percentage of Assets0.0
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment us-gaap:RetainedEarnings0.0

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

pro:AccumulatedOtherComprehensiveIncomenetoftax


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value-3.882-4.039-3.431-3.862-3.995-4.081-3.911-4.124-3.466-3.644-3.374-3.166-3.078-2.289-2.816-4.91-4.322-2.2490.00.0
Percentage of StockholdersEquity-15.1-11.5-2.9-3.0-3.4-3.1-2.4-2.6-3.6-12.0-6.1-5.04.54.26.0144.7-7.8-2.30.00.0
Percentage of Assets-0.8-0.8-0.6-0.7-0.9-0.9-0.8-0.8-0.7-0.8-0.8-0.7-1.1-0.8-1.0-2.2-1.6-0.70.00.0
Percentage of Assets pro:AccumulatedOtherComprehensiveIncomenetoftax0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value5265185895835535485605184393573643602122082071751581341068777696357
Percentage of StockholdersEquity2048.11479.7503.3452.0468.6422.8339.7332.4460.81173.7664.6571.4-309.5-377.9-442.6-5176.1286.3135.796.098.9105.4117.4115.3131.8
Percentage of Assets103.096.9109.1105.8129.6120.0109.299.986.680.483.583.975.574.372.077.260.244.859.459.964.371.20.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value0.0490.0490.0480.0480.0480.0480.0470.0470.0450.0420.0420.0420.0370.0370.0360.0350.0340.0340.0330.0320.0310.0310.030.03
Percentage of StockholdersEquity0.20.10.00.00.00.00.00.00.00.10.10.1-0.1-0.1-0.1-1.00.10.00.00.00.00.10.10.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value-467.518-449.472-438.773-420.589-401.732-384.524-361.789-344.489-327.142-309.625-292.708-279.948-264.161-247.317-238.185-160.259-85.034-19.22318149.9273.5775.508-0.008
Percentage of StockholdersEquity-1817.2-1283.1-374.9-326.0-340.0-296.7-219.3-220.9-342.6-1016.2-533.2-444.3384.7448.5507.04721.8-153.5-19.416.516.813.46.010.0-0.0
Percentage of Assets-91.4-84.0-81.3-76.3-94.0-84.2-70.5-66.4-64.4-69.6-67.0-65.2-93.9-88.2-82.5-70.4-32.2-6.410.210.28.23.60.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value-29.847-29.847-29.847-29.847-29.847-29.847-29.847-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938-13.938
Percentage of StockholdersEquity-116.0-85.2-25.5-23.1-25.3-23.0-18.1-8.9-14.6-45.7-25.4-22.120.325.329.7410.7-25.2-14.1-12.5-15.7-18.8-23.4-25.3-31.9
Percentage of Assets-5.8-5.6-5.5-5.4-7.0-6.5-5.8-2.7-2.7-3.1-3.2-3.2-5.0-5.0-4.8-6.1-5.3-4.6-7.8-9.5-11.5-14.20.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value49000.049000.048000.048000.048000.048000.047000.047000.045000.042000.042000.042000.037000.037000.036000.036000.036000.036000.035000.035000.035000.035000.034000.034000.035000.035000.034000.034000.034000.034000.033000.033000.032000.032000.032000.032000.032000.032000.031000.031000.031000.031000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value526518589583553548560518439357364360212208207202196179175169165159158152145138134112106100106100959087858277
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets103.096.9109.1105.8129.6120.0109.299.986.680.483.583.975.574.372.069.366.185.077.273.368.763.860.256.152.150.344.861.758.453.759.461.962.759.459.960.365.364.3

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
Value-467.518-449.472-438.773-420.589-401.732-384.524-361.789-344.489-327.142-309.625-292.708-279.948-264.161-247.317-238.185-221.205-199.979-180.466-160.259-141.746-126.038-105.511-85.034-67.303-49.121-33.453-19.223-1.0762.8799.87318181716141312119.9277.8065.8743.577
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 Assets-91.4-84.0-81.3-76.3-94.0-84.2-70.5-66.4-64.4-69.6-67.0-65.2-93.9-88.2-82.5-75.6-67.1-85.6-70.4-61.4-52.3-42.1-32.2-24.8-17.6-12.2-6.4-0.61.65.310.211.211.310.910.29.59.69.48.26.95.53.6

us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:AdjustmentsForNewAccountingPronouncements

pro:AccountingStandardsUpdate202006


Retained
Period End2021-01-01
Value11
Percentage of RetainedEarningsAccumulatedDeficit0.0
Percentage of Assets0.0
Percentage of Assets pro:AccountingStandardsUpdate2020060.0

us-gaap:AccountingStandardsUpdate202006


Retained
Period End2021-01-01
Value11
Percentage of RetainedEarningsAccumulatedDeficit0.0
Percentage of Assets0.0
Percentage of Assets us-gaap:AccountingStandardsUpdate2020060.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value-3882000.0-4039000.0-3431000.0-3862000.0-3995000.0-4081000.0-3911000.0-4124000.0-3466000.0-3644000.0-3374000.0-3166000.0-3078000.0-2289000.0-2816000.0-3209000.0-3544000.0-4663000.0-4910000.0-3766000.0-3934000.0-3561000.0-4322000.0-3771000.0-4018000.0-4805000.0-2249000.0-1421000.0157000.0-26000.000-11000.0-11000.0-11000.0-11000.0-11000.0-11000.0-11000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.8-0.8-0.6-0.7-0.9-0.9-0.8-0.8-0.7-0.8-0.8-0.7-1.1-0.8-1.0-1.1-1.2-2.2-2.2-1.6-1.6-1.4-1.6-1.4-1.4-1.7-0.7-0.80.1-0.00.00.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
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
Value292929292929291313131313131313131313131313131313131313131313131313131313131313131313
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.85.65.55.47.06.55.82.72.73.13.23.25.05.04.84.84.76.66.16.05.85.65.35.15.05.14.67.77.77.57.88.69.19.19.59.911.111.711.512.413.114.2

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8.5888.1535.9036.3615.7316.3276.4246.1895.9416.0545.1134.9495.55.991
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
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
Value8.5888.1535.9036.3615.7316.3276.4246.1895.9416.0545.1134.9495.55.991
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-4.985-4.42912-14.886-22.782-24.173124.037-3.549-8.09515-1.175-3.578-4.7324.535-8.539-9.116-12.193-7.1862.213-6.608-2.7648.7284.8273.411-1.434-1.35312-12.4953.4095.8123.2256.6731.261133.93.5453.4243.1582.4632.695.9322.203-7.532
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-8.0-7.220.5-24.2-35.7-36.519.46.3-5.6-14.428.9-2.4-7.5-9.99.8-20.4-22.6-30.4-18.05.8-17.8-7.320.811.88.2-3.3-2.526.1-28.28.315.08.818.83.842.113.012.612.712.09.811.327.710.9-48.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-0.785-1.801-5.531-4.925-8.599-11.405-2.439-11.828-1.764-1.529-1.166-1.421-1.577-2.094-0.902-29.424-0.9478.92730-10.688-8.871-35.96818-14.2820.432-13.7150.974-2.135-3.77912-54.194-0.866-1.962-1.744-2.758-2.69-3.048-1.031-1.07-0.622-0.248-1.025-0.263-0.36
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-1.3-2.9-9.1-8.0-13.5-17.2-3.7-18.4-2.8-2.7-2.2-2.9-3.3-4.4-1.9-70.2-2.322.275.4-27.8-24.0-94.843.2-34.91.0-31.41.8-4.6-8.531.3-139.4-2.4-5.5-5.2-8.4-9.0-10.8-3.8-4.1-2.5-1.0-4.8-1.3-2.3

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.01.244-0.491122-0.049-18.808-23.815-2.17662-13.296-0.257142-1.384-5.604-0.507-2.35796-2.8660.2460.516-0.081-4.3650.064-1.4720.05-4.196120-0.055-0.826-13.8122.2960.1881.054-0.613-0.1110.272-0.2480.063-0.0340.1660.4550.7470.8420.184
Percentage of NetCashProvidedByUsedInFinancingActivities0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.02.0-0.8198.8-0.1-28.4-36.0-3.497.5-23.7-0.5290.6-2.9-11.7-1.1-5.6238.5-7.10.61.3-0.2-11.50.2-3.60.1-9.6224.8-0.1-1.9-33.85.90.53.0-1.8-0.30.9-0.90.2-0.10.71.93.54.21.2

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-5.603-5.2056.782102-31.625-54.295-13.085-10.456-22.84
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-9.0-8.511.1166.1-49.6-81.9-19.8-16.289.1-40.7

Amortization Of Financing Costs

us-gaap:AmortizationOfFinancingCosts

us-gaap:AmortizationOfFinancingCosts


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-30
Value373000.0373000.0245000.0174000.0158000.0156000.0165000.0286000.0341000.0365000.0361000.0357000.0352000.0349000.0345000.0340000.0228000.0214000.0211000.0209000.0207000.0204000.0-542000.0199000.0198000.012500.08500.012500.012500.012500.012500.013000.0
Percentage of AmortizationOfFinancingCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value3.0243.0683.753.6513.5133.423.6063.4353.5043.3253.273.1653.2563.3643.4843.0421.9722.0332.1112.4232.5082.4652.4723.1522.3762.3952.4762.5512.8252.5911.2271.0811.0320.9670.740.608
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Payable

us-gaap:IncreaseDecreaseInAccountsPayable

us-gaap:IncreaseDecreaseInAccountsPayable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-1113000.02012000.0-14161000.05747000.02150000.01447000.02981000.076000.0-1133000.0565000.01362000.0840000.01039000.0690000.0-1034000.0-1104000.0-793000.03631000.0-359000.0-1092000.0-2255000.0801000.0-719000.0-1615000.0203000.0-1918000.0118000.0-3344000.0-101000.0223000.0694000.01476000.0-355000.01070000.0-927000.02602000.0-2282000.0-183000.0492000.0824000.01969000.0-706000.0524000.0-1215000.0
Percentage of IncreaseDecreaseInAccountsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-4.985-4.42912-14.886-22.782-24.173124.037-3.549-8.09515-1.175-3.578-4.7324.535-8.539-9.116-12.193-7.1862.213-6.608-2.7648.7284.8273.411-1.434-1.35312-12.4953.4095.8123.2256.6731.261133.93.5453.4243.1582.4632.695.9322.203-7.532
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-8.0-7.220.5-24.2-35.7-36.519.46.3-5.6-14.428.9-2.4-7.5-9.99.8-20.4-22.6-30.4-18.05.8-17.8-7.320.811.88.2-3.3-2.526.1-28.28.315.08.818.83.842.113.012.612.712.09.811.327.710.9-48.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-18046000.0-22029000.0-18184000.0-18857000.0-17208000.0-22735000.0-17300000.0-17347000.0-17517000.0-16917000.0-12760000.0-15786000.0-16844000.0-18856000.0-16980000.0-21226000.0-19513000.0-20207000.0-18513000.0-15708000.0-20527000.0-20477000.0-17731000.0-18182000.0-15668000.0-14230000.0-17459000.0-3734000.0-6996000.0-8455000.0139000.0993000.0580000.01734000.01424000.01356000.0995000.01191000.02121000.01932000.01441000.0856000.0631000.0-2405000.0-628000.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-28.9-35.9-29.9-30.7-27.0-34.3-26.1-27.0-27.4-30.1-24.3-32.2-35.5-39.4-36.6-50.6-48.3-50.4-46.4-40.9-55.4-54.0-42.2-44.5-37.6-32.6-32.4-8.0-15.8-20.70.42.71.65.24.44.53.54.48.17.76.14.03.1-15.3-3.5

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


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
Value-18046000.0-22029000.0-18184000.0-18857000.0-17208000.0-22735000.0-17300000.0-17347000.0-17517000.0-16917000.0-12760000.0-15786000.0-16844000.0-18856000.0
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-28.9-35.9-29.9-30.7-27.0-34.3-26.1-27.0-27.4-30.1-24.3-32.2-35.5-39.4
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value8.6068.175.9226.3785.7526.3476.4466.2095.9796.0465.0984.9575.4625.9365.1315.5715.9326.1626.0213.1925.8695.3846.4836.6317.0057.7456.1356.1345.9894.4074.454.2634.1393.422.6832.492.442.0321.8241.6471.6051.7562.5031.05
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-0.785-1.801-5.531-4.925-8.599-11.405-2.439-11.828-1.764-1.529-1.166-1.421-1.577-2.094-0.902-29.424-0.9478.92730-10.688-8.871-35.96818-14.2820.432-13.7150.974-2.135-3.77912-54.194-0.866-1.962-1.744-2.758-2.69-3.048-1.031-1.07-0.622-0.248-1.025-0.263-0.36
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax-1.3-2.9-9.1-8.0-13.5-17.2-3.7-18.4-2.8-2.7-2.2-2.9-3.3-4.4-1.9-70.2-2.322.275.4-27.8-24.0-94.843.2-34.91.0-31.41.8-4.6-8.531.3-139.4-2.4-5.5-5.2-8.4-9.0-10.8-3.8-4.1-2.5-1.0-4.8-1.3-2.3

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.7851.34.9424.3538.205101.9111.0531.6960.6110.0690.2190.4090.7780.0510.540.2110.4840.7171.1851.8173.5221.9383.0060.741.111.2091.772.8641.6560.7650.4641.2240.9480.7452.693.0481.0311.070.6220.6130.6970.2630.36
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.01.244-0.491122-0.049-18.808-23.815-2.17662-13.296-0.257142-1.384-5.604-0.507-2.35796-2.8660.2460.516-0.081-4.3650.064-1.4720.05-4.196120-0.055-0.826-13.8122.2960.1881.054-0.613-0.1110.272-0.2480.063-0.0340.1660.4550.7470.8420.184
Percentage of NetCashProvidedByUsedInFinancingActivities0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerIncludingAssessedTax0.02.0-0.8198.8-0.1-28.4-36.0-3.497.5-23.7-0.5290.6-2.9-11.7-1.1-5.6238.5-7.10.61.3-0.2-11.50.2-3.60.1-9.6224.8-0.1-1.9-33.85.90.53.0-1.8-0.30.9-0.90.2-0.10.71.93.54.21.2

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage pro:InterestRate, us-gaap:Range

us-gaap:DebtInstrumentInterestRateStatedPercentage

pro:FederalFundsRate, srt:Maximum


Debt
Period End2020-12-312019-12-31
Value2.250.0225
Percentage of DebtInstrumentInterestRateStatedPercentage100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations pro:FederalFundsRate srt:Maximum0.00.0

pro:FederalFundsRate, srt:Minimum


Debt
Period End2020-12-312019-12-31
Value1.50.015
Percentage of DebtInstrumentInterestRateStatedPercentage66.766.7
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations pro:FederalFundsRate srt:Minimum0.00.0

pro:LiborRate, srt:Maximum


Debt
Period End2020-12-312019-12-31
Value2.250.0225
Percentage of DebtInstrumentInterestRateStatedPercentage100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations pro:LiborRate srt:Maximum0.00.0

pro:LiborRate, srt:Minimum


Debt
Period End2020-12-312019-12-31
Value1.50.015
Percentage of DebtInstrumentInterestRateStatedPercentage66.766.7
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations pro:LiborRate srt:Minimum0.00.0

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument

pro:Notesdue2024


Debt
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value1.01.01.01.00.01
Percentage of DebtInstrumentInterestRateStatedPercentage0.00.044.40.044.4
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations pro:Notesdue20240.00.00.00.00.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

pro:A2007EquityIncentivePlan


Share
Period End2020-12-31
Value175730.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0

pro:A2017EquityIncentivePlanMember


Share
Period End2020-12-312019-12-31
Value1927100.01612000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber1096.60.0

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value0.00.125541-0.00020.00.00.0762
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0100.0100.00.00.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0.0396950.8014020.0222210.173060.4594990.0196250.0036430.7358160.0189040.0014650.7835270.0107880.00.891390.01750.765260.5523820.0264480.0128220.044480.0882720.1089420.793070.0445250.014757790.04570.01250.0315
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod0.0638.40.00.0603.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value14000.00183000.0183000.0192000.0192000.0395000.0331000.0350000.0126000.0126000.093000.0
Percentage of UnrecognizedTaxBenefits100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312012-12-312011-12-31
Value1301060.00.0
Percentage of DeferredTaxAssetsValuationAllowance100.0100.00.00.0

pro:AccountsAndUnbilledReceivables

pro:AccountsAndUnbilledReceivables


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-13.5293.61-19.034133.773-8.8898.3852.6417.4743.773-4.3486.79610-3.454-2.1630.2780.406-0.5437.228-10.419-1.223-1.257-11.8-9.6572.248-13.06519-9.79511-6.7321.7057.104-5.1943.877-8.223108.626-6.2196.322.8831.924-4.471
Percentage of AccountsAndUnbilledReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pro:Adjustmenttoadditionalpaidincapitalpurchaseofcappedcall

pro:Adjustmenttoadditionalpaidincapitalpurchaseofcappedcall


Adjustmenttoadditionalpaidincapitalpurchaseofcappedcall
Period End2020-12-312020-09-302019-12-312019-09-302019-06-30
Value0-25335000.000-16445000.0
Percentage of Adjustmenttoadditionalpaidincapitalpurchaseofcappedcall0.0100.00.00.0100.0

pro:Adjustmenttoadditionalpaidincapitalpurchaseofcappedcall us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustmenttoadditionalpaidincapitalpurchaseofcappedcallus-gaap:
Period End2020-12-312020-09-302019-12-312019-09-302019-06-30
Value0-25335000.000-16445000.0
Percentage of Adjustmenttoadditionalpaidincapitalpurchaseofcappedcall0.0100.00.00.0100.0

pro:Convertibledebtinterestandamortization

pro:Convertibledebtinterestandamortization


Convertibledebtinterestandamortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1.5761.5764.482.4982.0852.0622.4183.7174.2744.3564.3154.2664.2264.1794.144.0942.592.3942.3762.3392.3172.2872.2722.2342.2232.1850.4920.00.00.0
Percentage of Convertibledebtinterestandamortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

pro:Convertibledebtissuancecostequitycomponent us-gaap:DebtInstrument

pro:Convertibledebtissuancecostequitycomponent

pro:NotesDue2027


Convertibledebtissuancecostequitycomponentus-gaap:
Period End2021-03-312020-12-31
Value1300000.00
Percentage of Convertibledebtissuancecostequitycomponent100.00.0

pro:Notesdue2024


Convertibledebtissuancecostequitycomponentus-gaap:
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1100000.00001100000.000
Percentage of Convertibledebtissuancecostequitycomponent84.60.00.00.00.00.00.0

pro:Costofsubscriptionmaintenanceandsupport

pro:Costofsubscriptionmaintenanceandsupport


Costofsubscriptionmaintenanceandsupport
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value151515141312121111111111108.6819.0838.4528.2247.6666.718
Percentage of Costofsubscriptionmaintenanceandsupport100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pro:ESPPcontributionsbyEmployees

pro:ESPPcontributionsbyEmployees


E
Period End2021-06-302021-03-312020-12-31
Value500000.01000000.0600000.0
Percentage of ESPPcontributionsbyEmployees100.0100.0100.0

pro:InternalUseSoftwareDevelopmentCostsCapitalized

pro:InternalUseSoftwareDevelopmentCostsCapitalized


Internal
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value421000.0459000.0394000.0412000.0415000.0153000.00868000.0927000.01202000.01168000.01316000.0801000.0688000.0736000.0572000.0479000.0497000.072000.0000115000.0118000.0139000.0543000.0893000.0730000.0609000.0731000.02330000.0-796000.0-3391000.0563000.01162000.0-347000.0
Percentage of InternalUseSoftwareDevelopmentCostsCapitalized100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pro:MaximumAmountContributableByEmployeesUnderESPPAnnually

pro:MaximumAmountContributableByEmployeesUnderESPPAnnually


Maximum
Period End2021-06-302021-03-312020-12-31
Value010000.00
Percentage of MaximumAmountContributableByEmployeesUnderESPPAnnually0.0100.00.0

pro:MaximumAmountContributablebyemployeesunderESPPHalfyearly

pro:MaximumAmountContributablebyemployeesunderESPPHalfyearly


Maximum
Period End2021-06-302021-03-312020-12-31
Value05000.00
Percentage of MaximumAmountContributablebyemployeesunderESPPHalfyearly0.0100.00.0

pro:PercentageOfTotalRevenue

pro:PercentageOfTotalRevenue


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value100.0100.00100.01.01.001.01.01.001.01.01.001.01.01.0
Percentage of PercentageOfTotalRevenue100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

pro:PercentageOfTotalRevenue us-gaap:StatementGeographical

country:US


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value35.034.0-1.032.00.320.3300.340.330.3500.340.350.36-0.010.380.380.39
Percentage of PercentageOfTotalRevenue35.034.00.032.032.033.00.034.033.035.00.034.035.036.00.038.038.039.0

pro:Therestoftheworld


Percentage
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value35.036.037.00.40.370.360.380.340.350.340.320.320.350.32
Percentage of PercentageOfTotalRevenue35.036.037.040.037.036.038.034.035.034.032.032.035.032.0

srt:Europe


Percentage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value30.030.0-8.031.00.280.3-0.080.30.290.31-0.10.310.31
Percentage of PercentageOfTotalRevenue30.030.00.031.028.030.00.030.029.031.00.031.031.0

pro:Purchaseofcappedcall

pro:Purchaseofcappedcall


Purchaseofcappedcall
Period End2020-12-312020-09-302019-12-312019-09-302018-12-312018-09-30
Value0.0250.00.00.00.0
Percentage of Purchaseofcappedcall0.0100.00.00.00.00.0

pro:Purchaseofcappedcall us-gaap:DebtInstrument

pro:NotesDue2027


Purchaseofcappedcallus-gaap:
Period End2021-06-302021-03-31
Value0.025
Percentage of Purchaseofcappedcall0.00.0

pro:Notesdue2024


Purchaseofcappedcallus-gaap:
Period End2021-06-302021-03-31
Value0.016
Percentage of Purchaseofcappedcall0.00.0

pro:TaxWithholdingRelatedToNetShareSettlementOfRestrictedStockUnits

pro:TaxWithholdingRelatedToNetShareSettlementOfRestrictedStockUnits


Tax
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
Value0.00.3520.1470.1130.049202.1552.9564.403140.2570.1851.7137.2550.1321.4890.0895.6650.2230.4050.0424.7970.1580.2380.4094.3190.6270.1430.256120.8920.120.3082.0220.4030.0470.5441.820.3090.0080.4311.1710.0910.0
Percentage of TaxWithholdingRelatedToNetShareSettlementOfRestrictedStockUnits0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

pro:Totalsubscriptionmaintenanceandsupportrevenue

pro:Totalsubscriptionmaintenanceandsupportrevenue


Totalsubscriptionmaintenanceandsupportrevenue
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value52545553514845444038373632303028272524
Percentage of Totalsubscriptionmaintenanceandsupportrevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt


Adjustments
Period End2020-12-312020-09-302019-12-312019-09-302019-06-302018-12-312018-09-30
Value0.0470.00.0320.0141
Percentage of AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt0.0100.00.00.0100.00.0100.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt us-gaap:AdjustmentsForNewAccountingPronouncements

pro:AccountingStandardsUpdate202006


Adjustments
Period End2021-01-01
Value80
Percentage of AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt0.0

us-gaap:AccountingStandardsUpdate202006


Adjustments
Period End2021-01-01
Value80
Percentage of AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt0.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-30
Value0.0-80.0980.0470.00.032
Percentage of AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt0.00.00.0100.00.00.0100.0

us-gaap:AmortizationOfDebtDiscountPremium

us-gaap:AmortizationOfDebtDiscountPremium


Amortization
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value3.0321.8241.5681.5461.7812.5682.8272.7412.7042.6592.6242.582.5452.5041.591.4611.4421.4111.3911.3641.3511.3161.3061.271
Percentage of AmortizationOfDebtDiscountPremium100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfDeferredCharges

us-gaap:AmortizationOfDeferredCharges


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1500000.01500000.01600000.01500000.01400000.01400000.01300000.01300000.01100000.01100000.0900000.0800000.0700000.0700000.0700000.0800000.0700000.0300000.0
Percentage of AmortizationOfDeferredCharges100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfFinancingCostsAndDiscounts

us-gaap:AmortizationOfFinancingCostsAndDiscounts


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.3730.3733.2872.0081.7361.7121.9562.8643.1793.1163.0693.0292.9882.9412.9012.8531.8351.6751.6531.621.5981.5681.5541.5141.5051.4660.3290.00.00.0
Percentage of AmortizationOfFinancingCostsAndDiscounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:CapitalExpendituresIncurredButNotYetPaid

us-gaap:CapitalExpendituresIncurredButNotYetPaid


Capital
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
Value7000.0328000.0-2699000.0-498000.0285000.03253000.0469000.0-500000.0-643000.01565000.0239000.0-14000.0-35000.057000.0
Percentage of CapitalExpendituresIncurredButNotYetPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CapitalizedContractCostAmortization

us-gaap:CapitalizedContractCostAmortization


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value300000.0300000.0400000.0400000.0600000.0500000.0400000.0400000.0400000.0200000.0200000.0100000.0100000.0100000.0100000.0100000.0
Percentage of CapitalizedContractCostAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentConvertibleConversionRatio1 us-gaap:DebtInstrument

us-gaap:DebtInstrumentConvertibleConversionRatio1

pro:NotesDue2027


Debt
Period End2021-06-302021-03-312020-12-31
Value023.9140
Percentage of DebtInstrumentConvertibleConversionRatio10.0100.00.0

pro:Notesdue2024


Debt
Period End2021-06-302021-03-312020-12-312019-12-31
Value015.13900
Percentage of DebtInstrumentConvertibleConversionRatio10.063.30.00.0

us-gaap:DebtInstrumentConvertibleStockPriceTrigger us-gaap:DebtInstrument

us-gaap:DebtInstrumentConvertibleStockPriceTrigger

pro:NotesDue2027


Debt
Period End2021-06-302021-03-312020-12-31
Value041.820
Percentage of DebtInstrumentConvertibleStockPriceTrigger0.0100.00.0

pro:Notesdue2019


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value00033.7900033.7900033.7900
Percentage of DebtInstrumentConvertibleStockPriceTrigger0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pro:Notesdue2024


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value066.0500066.0500
Percentage of DebtInstrumentConvertibleStockPriceTrigger0.0157.90.00.00.00.00.00.0

us-gaap:DebtInstrumentPeriodicPaymentInterest

us-gaap:DebtInstrumentPeriodicPaymentInterest


Debt
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
Value1203000.01203000.01203000.0500000.0359000.0360000.0472000.0863000.01106000.01250000.01250000.01250000.01250000.01250000.01250000.01250000.0772000.0719000.0723000.0719000.0719000.0719000.0718000.0719000.0719000.0719000.0
Percentage of DebtInstrumentPeriodicPaymentInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredRevenueRevenueRecognized1

us-gaap:DeferredRevenueRevenueRecognized1


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4542134548471045433810323330555272927
Percentage of DeferredRevenueRevenueRecognized1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value167000.0-219000.0352000.0-256000.0-195000.091000.0317000.0-433000.0-39000.080000.0-178000.021000.0260000.071000.020000.0-290000.0-220000.0-39000.0-352000.016000.011000.027000.0-111000.044000.0278000.0-14000.0-13000.0376000.094000.0-51000.00000
Percentage of EffectOfExchangeRateOnCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:IncreaseDecreaseInAccruedLiabilities

us-gaap:IncreaseDecreaseInAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-4.1193.9181.652-4.877-2.783-3.845.5784.6462.5972.6343.297-2.6473.529-1.415-0.582-0.76-0.1470.4341.9140.247-0.3941.0340.4360.235-0.3450.474-1.5280.0770.737-0.366-0.3690.98-0.5890.98-0.6341.3551.205-0.226-0.4050.3020.225-0.6410.023-0.899
Percentage of IncreaseDecreaseInAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeferredRevenue

us-gaap:IncreaseDecreaseInDeferredRevenue


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-12.93711-7.45-0.402-21.822-2.01614-0.426-0.211112.144103.0968.6373.4966.29-0.0375.1262.503-1.8365.7038.018-1.713.8236.513-1.7275.6882.967-1.3650.506-0.012-0.587-5.3672.7481.0493.9433.247-2.4026.7650.212-2.6391.7166.9431.089
Percentage of IncreaseDecreaseInDeferredRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities

us-gaap:IncreaseDecreaseInEmployeeRelatedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value4598000.0-7573000.03495000.04378000.05076000.0-20055000.05220000.06737000.07759000.0-11779000.06172000.03985000.03854000.0-8181000.03378000.02879000.02356000.0-10957000.04486000.02955000.0957000.0-3203000.02861000.01415000.02980000.0-9304000.04221000.0821000.0-993000.0-760000.01861000.02030000.01708000.0-4549000.01756000.02587000.01595000.0-3059000.0-1782000.0984000.02001000.0-669000.074000.01116000.0
Percentage of IncreaseDecreaseInEmployeeRelatedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet

us-gaap:IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value-199000.0173000.0-5254000.0-868000.0
Percentage of IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-542000.0-867000.0-406000.0-717000.0-863000.0-763000.0648000.01191000.01040000.0893000.02569000.0875000.0880000.0-238000.000
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-1490000.0395000.01507000.0192000.0-1024000.0701000.0462000.01059000.01458000.02065000.0-1971000.01822000.0-1513000.01575000.0-2586000.05320000.0315000.0666000.0169000.0-58000.01262000.0-458000.0-612000.01891000.0-754000.0-754000.0-2992000.02595000.02968000.0812000.0-2617000.0592000.0-341000.01162000.01061000.02535000.0-4771000.0-1040000.0833000.0440000.0175000.0203000.0616000.02044000.0
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap: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
Value1917000.02461000.01890000.02072000.01973000.01627000.01534000.01467000.01866000.01016000.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsOfDebtIssuanceCosts


Payments
Period End2020-12-312020-09-302019-12-312019-09-302018-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value344000.0675000.00212000.000125000.00000000408000.0
Percentage of PaymentsOfDebtIssuanceCosts100.0100.00.0100.00.00.0100.00.00.00.00.00.00.00.0100.0

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToAcquireOtherInvestments


Payments
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302018-12-312018-09-30
Value0501000.0168000.0113000.0113000.0112000.045000.00
Percentage of PaymentsToAcquireOtherInvestments0.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ProceedsFromConvertibleDebt

us-gaap:ProceedsFromConvertibleDebt


Proceeds
Period End2020-12-312020-09-302019-12-312019-09-302018-12-312018-09-302017-12-312017-09-302016-12-312016-09-30
Value0.01460.00.00.00.00.00.00.00.0
Percentage of ProceedsFromConvertibleDebt0.0100.00.00.00.00.00.00.00.00.0

us-gaap:ProceedsFromStockPlans

us-gaap:ProceedsFromStockPlans


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value01596000.001460000.001364000.001052000.00943000.00886000.00834000.00759000.00776000.00620000.00470000.00457000.00382000.00335000.0000
Percentage of ProceedsFromStockPlans0.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.00.00.0

us-gaap:ProceedsFromStockPlans us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value01596000.001460000.001364000.001052000.00943000.00886000.00834000.0
Percentage of ProceedsFromStockPlans0.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.0

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:ProvisionForDoubtfulAccounts


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value-1131000.0-559000.0-766000.0263000.02690000.02596000.0-754000.0000-3000.000000400000.0-87000.0-43000.0-96000.0-414000.066000.0220000.0-154000.098000.0-46000.0-44000.0-200000.0340000.030000.0-10000.0-60000.0-69000.00-37000.0-220000.0180000.0-2000.0-38000.038000.070000.0
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ResearchAndDevelopmentExpenseSoftwareExcludingAcquiredInProcessCost

us-gaap:ResearchAndDevelopmentExpenseSoftwareExcludingAcquiredInProcessCost


Research
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
Value20201819181917161715141312141314141413121313111211118.8581111118.3458.0018.0268.0967.0937.0496.7726.6976.7196.8436.1495.965.1224.8565.472
Percentage of ResearchAndDevelopmentExpenseSoftwareExcludingAcquiredInProcessCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-01-01
Value0.1940.0971.0559.7850.01.7591.3126
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceOfferingDate

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceOfferingDate


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302016-12-312016-09-302015-12-312015-09-30
Value015.0014.8500.15000000
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceOfferingDate0.0100.00.0100.00.0100.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value056.0500054.23
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.0100.00.00.00.0100.0

us-gaap:RestrictedStockUnitsRSU


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value38.3248.0533.7531.2966.2269.1352.1533.1339.4134.1427.1726.09021.3818.511.1911.71-0.1221.1420.125.74-0.1825.2725.535.69-0.2931.0628.8719600.0-0.1515.3515.25
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue0.085.70.00.0122.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

pro:MarketShareUnitsMsus


Share
Period End2021-06-302021-03-312016-12-312014-07-012014-02-242014-02-11
Value053.2900.50250.51130.5074
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate0.0100.00.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

pro:MarketShareUnitsMsus


Share
Period End2021-06-302021-03-312016-12-312014-07-012014-02-242014-02-11
Value00.2209.00.00660.0067
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate0.0100.00.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans

us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302016-12-312016-09-30
Value041970.0038683.0026774.0039964.0035340.0038431.00041282.0041845.0
Percentage of StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans0.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.00.0100.00.0100.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross


Stock
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
Value0-352000.0-147000.0-113000.0-49000.0-20172000.0-2155000.0-2956000.0-4403000.0-14239000.0-257000.0-185000.0-1713000.0-7255000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardGross0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
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
Value0-353000.0-147000.0-113000.0-49000.0-20173000.0-2155000.0-2956000.0-4404000.0-14239000.0-257000.0-185000.0-1713000.0-7256000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardGross0.0100.3100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStock


Stock
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
Value01000.00001000.0001000.000001000.0
Percentage of StockIssuedDuringPeriodValueRestrictedStockAwardGross0.0-0.3-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0

dei:EntityCommonStockSharesOutstanding

dei:EntityCommonStockSharesOutstanding


Entity
Period End2021-07-272021-04-272021-02-082020-10-22
Value44444443
Percentage of EntityCommonStockSharesOutstanding100.0100.0100.0100.0

pro:AccountAndUnbilledReceivablesNet

pro:AccountAndUnbilledReceivablesNet


Account
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value53496754536555534541463929323433323326363739506058715262504644374238463633
Percentage of AccountAndUnbilledReceivablesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pro:DebtInstrumentCovenantMinimumLiquidity

pro:DebtInstrumentCovenantMinimumLiquidity


Debt
Period End2020-12-31
Value50
Percentage of DebtInstrumentCovenantMinimumLiquidity100.0

pro:DebtinstrumentConvertibleInitialissuepriceper1000ofprincipal us-gaap:DebtInstrument

pro:DebtinstrumentConvertibleInitialissuepriceper1000ofprincipal

pro:Notesdue2047


Debtinstrument
Period End2020-12-31
Value880.0
Percentage of DebtinstrumentConvertibleInitialissuepriceper1000ofprincipal100.0

pro:DeferredTaxAssetDeferredRevenue

pro:DeferredTaxAssetDeferredRevenue


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value2441000.02264000.02680000.02996000.02265000.0923000.056000.0431000.00
Percentage of DeferredTaxAssetDeferredRevenue100.0100.0100.0100.0100.0100.0100.0100.00.0

pro:DeferredTaxAssetDisallowedInterest

pro:DeferredTaxAssetDisallowedInterest


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value8174000.05871000.04574000.00
Percentage of DeferredTaxAssetDisallowedInterest100.0100.0100.00.0

pro:DeferredTaxAssetsOperatingLeaseLiabilities

pro:DeferredTaxAssetsOperatingLeaseLiabilities


Deferred
Period End2020-12-312019-12-31
Value9833000.05068000.0
Percentage of DeferredTaxAssetsOperatingLeaseLiabilities100.0100.0

pro:InternalUseSoftwareDevelopedSubjectToAmortization

pro:InternalUseSoftwareDevelopedSubjectToAmortization


Internal
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value129.62.8191.0120.00.01.61.70.9
Percentage of InternalUseSoftwareDevelopedSubjectToAmortization100.0100.0100.0100.00.00.0100.0100.0100.0

pro:LesseeOperatingLeaseAnticipatedIncentives

pro:LesseeOperatingLeaseAnticipatedIncentives


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value1.3851.3851.38510
Percentage of LesseeOperatingLeaseAnticipatedIncentives100.0100.0100.0100.0

pro:REtaxcreditcarryforwardforfutureuse

pro:REtaxcreditcarryforwardforfutureuse


R
Period End2020-12-31
Value16
Percentage of REtaxcreditcarryforwardforfutureuse100.0

pro:RevenueRemainingPerformanceObligationtoberecognizedwithin12months

pro:RevenueRemainingPerformanceObligationtoberecognizedwithin12months


Revenue
Period End2021-06-302021-03-312020-12-312020-09-30
Value190191178175
Percentage of RevenueRemainingPerformanceObligationtoberecognizedwithin12months100.0100.0100.0100.0

pro:StockPriceAtYearEnd

pro:StockPriceAtYearEnd


Stock
Period End2020-12-312019-12-31
Value50.7759.92
Percentage of StockPriceAtYearEnd100.0100.0

pro:TreasuryMoneyMarketFundsAtFairValue

pro:TreasuryMoneyMarketFundsAtFairValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312012-09-302012-06-302011-12-31
Value293296301181209239273289294248268131130135131144117961067271951271091221161351014262158585858
Percentage of TreasuryMoneyMarketFundsAtFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableGross

us-gaap:AccountsReceivableGross


Accounts
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value50593830313664403429
Percentage of AccountsReceivableGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivable


Allowance
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value4122000.0214000.0978000.0760000.0760000.0586000.0868000.01060000.0-760000.0-1130000.0
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1.1823.5634.1224.6164.9822.810.2140.9680.9770.9740.9780.9810.9830.760.760.760.760.760.760.360.4470.490.5861.00.9340.7148680.770.8160.861.060.720.690.760.860.860.911.130.950.951.02
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:AccountingStandardsUpdate201613


Allowance
Period End2020-12-31
Value4.1
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent99.5

us-gaap:CapitalizedContractCostNet

us-gaap:CapitalizedContractCostNet


Capitalized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2700000.02800000.02900000.03200000.03500000.04100000.04400000.04800000.04700000.04300000.03900000.03500000.02900000.02200000.0
Percentage of CapitalizedContractCostNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractualObligation

us-gaap:ContractualObligation


Contractual
Period End2020-12-31
Value1600000.0
Percentage of ContractualObligation100.0

us-gaap:ConvertibleDebt

us-gaap:ConvertibleDebt


Convertible
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
Value287287218214114112110151219228225213
Percentage of ConvertibleDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConvertibleDebtNoncurrent

us-gaap:ConvertibleDebtNoncurrent


Convertible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value28728721821411411211010919889882222192162132102071231221201191171161141131111100.0
Percentage of ConvertibleDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ConvertibleDebtNoncurrent us-gaap:DebtInstrument

pro:NotesDue2027


Convertible
Period End2021-06-302021-03-312020-09-30
Value14614698
Percentage of ConvertibleDebtNoncurrent50.950.946.0

pro:Notesdue2024


Convertible
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value141140115114112109107
Percentage of ConvertibleDebtNoncurrent49.149.154.0100.0100.0100.054.1

us-gaap:CostMethodInvestmentsFairValueDisclosure

us-gaap:CostMethodInvestmentsFairValueDisclosure


Cost
Period End2020-12-312019-12-312019-09-302019-06-302018-12-31
Value2600000.02300000.02200000.02100000.02000000.0
Percentage of CostMethodInvestmentsFairValueDisclosure100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent

us-gaap:DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent


Debt
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value80803232327070373737373737373728282828282828282828
Percentage of DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentFaceAmount

us-gaap:DebtInstrumentFaceAmount


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value293293293293143143143189271250250250250250250250250143143143143143143143143143143
Percentage of DebtInstrumentFaceAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentFaceAmount us-gaap:DebtInstrument

pro:Notesdue2019


Debt
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1431432121143143143143143143143143
Percentage of DebtInstrumentFaceAmount49.0100.011.48.057.557.557.557.557.557.557.557.5

pro:Notesdue2024


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value143143143143143143143143143
Percentage of DebtInstrumentFaceAmount48.948.949.048.9100.0100.0100.075.952.9

us-gaap:DebtInstrumentFairValue

us-gaap:DebtInstrumentFairValue


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value34233236327613812116323135029825126827626524623924712512011810690114114
Percentage of DebtInstrumentFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:DebtInstrument

us-gaap:DebtInstrumentInterestRateEffectivePercentage

pro:Notesdue2024


Debt
Period End2020-12-31
Value6.6
Percentage of DebtInstrumentInterestRateEffectivePercentage100.0

us-gaap:DebtInstrumentUnamortizedDiscount us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:DebtInstrumentUnamortizedDiscount

pro:AccountingStandardsUpdate202006


Debt
Period End2021-01-01
Value70
Percentage of DebtInstrumentUnamortizedDiscount100.0

us-gaap:AccountingStandardsUpdate202006


Debt
Period End2021-01-01
Value68
Percentage of DebtInstrumentUnamortizedDiscount97.5

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value6.2086.581757829313338522124273033363942192123242627
Percentage of DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCosts

us-gaap:DeferredCosts


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value11111212131415151413131110103.194
Percentage of DeferredCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCostsCurrent

us-gaap:DeferredCostsCurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value5879000.05883000.05941000.05917000.05888000.05829000.05756000.05415000.04927000.04494000.04089000.03413000.03053000.02704000.03137000.0
Percentage of DeferredCostsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCostsCurrentAndNoncurrent

us-gaap:DeferredCostsCurrentAndNoncurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value17171818192021201918171414136.3
Percentage of DeferredCostsCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredRevenueCurrent

us-gaap:DeferredRevenueCurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value10111399106107126124113113112991008983757371736867686960635854575046474235364239373333
Percentage of DeferredRevenueCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredRevenueNoncurrent

us-gaap:DeferredRevenueNoncurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302011-12-31
Value7.8968.52811111013171414161714141719181311119.939103.6214.6653.9354.3842.241.1212.6393.4373.8712.9772.7873.1492.4322.0072.7743.1262.85
Percentage of DeferredRevenueNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-31
Value130106
Percentage of DeferredTaxAssetsGross100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value8169584640205.7334.7240.0
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsForeign

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsForeign


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value14118.9459.057108.457100.0
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsForeign100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value2697000.02254000.02319000.01050000.01517000.0714000.0537000.0813000.00
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal100.0100.0100.0100.0100.0100.0100.0100.00.0

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
Value-93000.01458000.01291000.01425000.01317000.0487000.0-21000.000-12000.0
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.00.00.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value3987000.02005000.02005000.01613000.01348000.01348000.01240000.0
Percentage of DeferredTaxAssetsTaxCreditCarryforwards100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2168000.02168000.02462000.02521000.01795000.01257000.0837000.0100000.0100000.0700000.0
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsForeign100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsResearch

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsResearch


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value1211109.346.8525.6964.3162.7080.0
Percentage of DeferredTaxAssetsTaxCreditCarryforwardsResearch100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value2.8782.5346.9226.3738.053109.0957.8086.0815.02
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value2097000.01905000.01533000.01397000.01591000.01538000.0897000.01541000.00
Percentage of DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value1831000.02971000.04110000.05096000.02187000.02289000.02193000.02366000.00
Percentage of DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredTaxLiabilitiesLeasingArrangements

us-gaap:DeferredTaxLiabilitiesLeasingArrangements


Deferred
Period End2020-12-312019-12-31
Value5645000.04431000.0
Percentage of DeferredTaxLiabilitiesLeasingArrangements100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-31
Value104000.0158000.0
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0

us-gaap:EmployeeRelatedLiabilitiesCurrent

us-gaap:EmployeeRelatedLiabilitiesCurrent


Employee
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
Value221725221712322718102216128.5316139.747.3911813109.84713108.835.854151010119.6796.8584.8283.1237.6695.9134.5462.085.1396.9215.9384.606
Percentage of EmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized


Employee
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value7889555043
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value3730231612115.0220.068
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

pro:Maintenancerelationship


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value3.2592.792.4882.2071.7551.5270.788
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization8.79.310.613.614.413.815.7

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value108.4786.8844.4822.8542.4051.3990.037
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization27.128.229.427.623.421.827.954.4

us-gaap:DevelopedTechnologyRights


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2217139.565.6714.8972.0820.027
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization59.058.759.358.846.444.441.539.7

us-gaap:TechnologyBasedIntangibleAssets


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1.9251.1280.180.00.0
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization5.13.80.80.00.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive


Finite
Period End2020-12-31
Value96000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths


Finite
Period End2020-12-31
Value3391000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2020-12-31
Value156000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2020-12-31
Value971000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2020-12-31
Value1547000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo


Finite
Period End2020-12-31
Value2180000.0
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo100.0

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:FiniteLivedIntangibleAssetsGross


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value454442432425258.3
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsGross us-gaap:FiniteLivedIntangibleAssetsByMajorClass

pro:Maintenancerelationship


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value3.6083.4513.4853.5653.3463.5913.591
Percentage of FiniteLivedIntangibleAssetsGross7.97.78.18.313.514.214.2

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value121211114.7364.8534.8533.5
Percentage of FiniteLivedIntangibleAssetsGross27.427.927.627.419.019.219.242.2

us-gaap:DevelopedTechnologyRights


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value272625261314144.6
Percentage of FiniteLivedIntangibleAssetsGross60.660.159.860.353.257.857.855.4

us-gaap:TechnologyBasedIntangibleAssets


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1.9251.9251.9251.751.625
Percentage of FiniteLivedIntangibleAssetsGross4.24.34.54.16.5

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value10109.588.663
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear


Lessee
Period End2021-06-302021-03-312020-09-30
Value4894000.07223000.01607000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity


Line
Period End2020-12-31
Value50
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-312019-12-31
Value7.127.26
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:OperatingLossCarryforwards

us-gaap:OperatingLossCarryforwards


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value38937931026017010668
Percentage of OperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLossCarryforwards us-gaap:BusinessAcquisition

pro:CameleonAcquistion


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value50473536292533
Percentage of OperatingLossCarryforwards12.912.411.513.917.124.049.4

us-gaap:PurchaseObligation

us-gaap:PurchaseObligation


Purchase
Period End2021-06-302021-03-312020-12-312020-09-30
Value24353746
Percentage of PurchaseObligation100.0100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligation


Revenue
Period End2021-06-302021-03-312020-12-312020-09-30
Value390401389366
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

pro:MarketShareUnitsMsus


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value111000.0267000.0419000.0387000.0342000.0563000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0

pro:RestrictedStockUnittimebased


Share
Period End2020-12-312019-12-312018-12-312017-12-31
Value1802000.01893000.01969000.02133000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber1623.4709.0469.9551.2

us-gaap:PerformanceShares


Share
Period End2020-12-312019-12-31
Value162000.0114000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber145.942.7

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

pro:MarketShareUnitsMsus


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value38.1832.5425.923.4829.0641.5544.0334.2400
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.00.00.0

pro:RestrictedStockUnittimebased


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value41.4427.8321.7718.918.05
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue108.585.584.180.562.1

us-gaap:PerformanceShares


Share
Period End2020-12-312019-12-312018-12-31
Value41.8933.050
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue109.7101.60.0

us-gaap:StockAppreciationRightsSARS


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value11.4210.3810.9210.9710.86
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue29.931.942.246.737.4

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber

pro:MarketShareUnitsMsus


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value126000.0126000.0111000.0157000.0157000.0157000.0267000.0267000.0267000.0267000.0419000.0404000.0419000.0419000.0387000.0347000.0347000.0347000.0342000.0342000.0464000.0464000.0563000.0563300.0563300.0563300.0444270.00205000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

pro:RestrictedStockUnittimebased


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1869000.02011000.01802000.01611000.01674000.01534000.01893000.01876000.01876000.01892000.01969000.02133000.02237000.01915000.01830000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber1483.31596.01623.41026.11066.2977.1709.0702.6702.6708.6469.9551.2654.1340.1411.9

us-gaap:PerformanceShares


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value140000.0140000.0162000.0190000.0190000.0190000.0114000.0114000.0114000.0114000.00000024000.032000.032000.032000.034000.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber111.1111.1145.9121.0121.0121.042.742.742.742.70.00.00.00.00.04.35.75.75.77.70.0

us-gaap:StockAppreciationRightsSARS


Share
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value28000.032000.032000.032000.065000.0165000.0282000.0287000.0287000.0287000.0292000.0303000.0356000.0391000.0391000.0490000.0515000.0516000.0522000.0522000.0522000.0531690.0605690.0621190.0673070.0721000.0790000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber25.220.420.420.424.361.8105.6107.568.571.069.772.392.0112.7112.7141.2150.6150.9112.5112.592.794.4107.5110.3151.50.0385.4

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber us-gaap:AwardType, us-gaap:PlanName

pro:MarketShareUnitsMsus, pro:A2017EquityIncentivePlanMember


Share
Period End2020-12-312019-12-312018-12-312017-12-31
Value110730.0156570.0156570.039669.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber99.858.637.410.3

us-gaap:RestrictedStockUnitsRSU, pro:A2007EquityIncentivePlan


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value147730.0551350.01358800.02405700.02689900.01799300.01631000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber133.1206.5324.3621.6786.5319.6367.1

us-gaap:RestrictedStockUnitsRSU, pro:A2017EquityIncentivePlanMember


Share
Period End2020-12-312019-12-312018-12-312017-12-31
Value1816400.01455500.0825180.072292.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber1636.4545.1196.918.7

us-gaap:StockAppreciationRightsSARS, pro:A2007EquityIncentivePlan


Share
Period End2020-12-312019-12-312018-12-31
Value28000.065000.0287000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber25.224.368.5

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized

us-gaap:EmployeeStock


Share
Period End2021-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1.00.383310.383310.4251550.4251550.4490030.4490030.4718150.4718150.4866080.4866080.50.5
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized us-gaap:PlanName

pro:A2017AmendedEquityIncentivePlan


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value7.654.554.554.554.554.554.554.55
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized765.00.00.00.00.00.00.00.0

pro:A2017EquityIncentivePlanMember


Share
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302017-09-302017-06-302017-03-31
Value4.552.52.52.52.52.52.52.52.52.5
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized455.00.00.00.00.00.00.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant

us-gaap:EmployeeStock


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value532820.032824.074794.074794.0113480.0113480.0140250.0140250.0180220.0180220.0215560.0215560.0253990.0253990.0291100.0291100.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant us-gaap:PlanName

pro:A2017EquityIncentivePlanMember


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value4047100.0892060.01745900.01912200.01857200.02010100.02466300.02512100.02524000.0466600.01347200.01358800.01348900.01341600.02348400.02489200.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant759.62717.72334.32556.61636.61771.41758.51791.11400.5258.9625.0630.4531.1528.2806.7855.1

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:StockAppreciationRightsSARS


Share
Period End2020-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value1.1025.8695.5185.4876.35111210.223
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue

us-gaap:StockAppreciationRightsSARS


Share
Period End2020-12-31
Value1102000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber

us-gaap:StockAppreciationRightsSARS


Share
Period End2020-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value28000.0287000.0356000.0515000.0522000.0662000.0551000.0417000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice

us-gaap:StockAppreciationRightsSARS


Share
Period End2020-12-31
Value11.42
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue

pro:RestrictedStockUnittimebased


Share
Period End2020-12-312019-12-312018-12-312017-12-31
Value831065954
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue100.0100.0100.0100.0

us-gaap:PerformanceShares


Share
Period End2020-12-312019-12-31
Value3.74413
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue4.512.8

us-gaap:StockAppreciationRightsSARS


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value1.1023.225.8695.5185.4876.3511121
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue1.33.09.810.10.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber

pro:RestrictedStockUnittimebased


Share
Period End2020-12-312019-12-312018-12-312017-12-31
Value1653000.01775000.01902000.02073000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber100.0100.0100.0100.0

us-gaap:PerformanceShares


Share
Period End2020-12-312019-12-31
Value74000.0228000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber4.512.8

us-gaap:StockAppreciationRightsSARS


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value28000.065000.0287000.0356000.0515000.0522000.0673000.0721000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber1.73.715.117.20.00.00.00.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice

pro:RestrictedStockUnittimebased


Share
Period End2020-12-312019-12-312018-12-312017-12-31
Value40.827.5721.6518.92
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0

us-gaap:StockAppreciationRightsSARS


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312013-12-31
Value11.4210.3810.9210.9710.8610.8710.89
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice28.037.650.458.00.00.00.0

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested us-gaap:AwardType

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested

pro:MarketShareUnitsMsus


Sharebased
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5.6221513107.362
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested100.0100.0100.0100.0100.0

pro:RestrictedStockUnittimebased


Sharebased
Period End2020-12-312019-12-312018-12-312017-12-31
Value911136156
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested1627.1709.8469.7551.2

us-gaap:PerformanceShares


Sharebased
Period End2020-12-312019-12-31
Value8.2436.826
Percentage of SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested146.642.7

us-gaap:StockRepurchaseProgramAuthorizedAmount1

us-gaap:StockRepurchaseProgramAuthorizedAmount1


Stock
Period End2020-12-31
Value15
Percentage of StockRepurchaseProgramAuthorizedAmount1100.0

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1


Stock
Period End2020-12-31
Value10000000.0
Percentage of StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1100.0

us-gaap:TreasuryStockShares

us-gaap:TreasuryStockShares


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value4680700.04680700.04680700.04680700.04680700.04680700.04680700.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.04417600.0
Percentage of TreasuryStockShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnamortizedDebtIssuanceExpense

us-gaap:UnamortizedDebtIssuanceExpense


Unamortized
Period End2020-12-312018-12-312017-12-312016-12-312014-12-312013-12-312012-12-31
Value100000.0145000.0185000.050000.0100000.0200000.0300000.0
Percentage of UnamortizedDebtIssuanceExpense100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnbilledReceivablesCurrent

us-gaap:UnbilledReceivablesCurrent


Unbilled
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value3443000.05682000.03924000.02555000.02323000.03162000.07959000.06784000.05229000.05064000.0
Percentage of UnbilledReceivablesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ValuationAllowancesAndReservesBalance us-gaap:ValuationAllowancesAndReservesType

us-gaap:ValuationAllowancesAndReservesBalance

us-gaap:AllowanceForCreditLoss


Valuation
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value4.1220.2140.9780.760.76
Percentage of ValuationAllowancesAndReservesBalance100.0100.0100.0100.0100.0

us-gaap:ValuationAllowanceOfDeferredTaxAssets


Valuation
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312009-12-31
Value13010694746944281.3570.00.00.0
Percentage of ValuationAllowancesAndReservesBalance3171.649755.19635.19757.09085.40.00.00.00.00.00.0

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
COGS Ratio
us-gaap:ProductOrService
(None,)
C O G S  Ratious-gaap: Product Or Service
TTM Greenblatt ROC
_
(None,)
T T M  Greenblatt  R O C_
us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:IncomeStatementLocation
(None,)
Allocated Share Based Compensation Expenseus-gaap: Income Statement Location
us-gaap:CostOfGoodsAndServicesSold
us-gaap:ProductOrService
(None,)
Cost Of Goods And Services Soldus-gaap: Product Or Service
us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax
us-gaap:ProductOrService
(None,)
Revenue From Contract With Customer Including Assessed Taxus-gaap: Product Or Service
us-gaap:Revenues
us-gaap:StatementGeographical
(None,)
Revenuesus-gaap: Statement Geographical
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Property Plant And Equipment Grossus-gaap: Property Plant And Equipment By Type
us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
(None,)
Finite Lived Intangible Assets Netus-gaap: Finite Lived Intangible Assets By Major Class
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components