GKOS


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

Table of contents



us-gaap:CommonStockValue

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesAuthorized

us-gaap:PreferredStockSharesAuthorized

us-gaap:CommonStockSharesOutstanding
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:AllocatedShareBasedCompensationExpense
us-gaap:AwardType
us-gaap:IncomeStatementLocation

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:CostOfGoodsAndServicesSold

us-gaap:GrossProfit

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaidNet
us-gaap:DebtInstrument
us-gaap:InterestExpenseDebt

us-gaap:NetIncomeLoss

us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingExpenses

us-gaap:OperatingIncomeLoss

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:StatementGeographical
us-gaap:StatementGeographical

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:InventoryFinishedGoods

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AmortizationOfIntangibleAssets
us-gaap:BusinessAcquisition, us-gaap:IncomeStatementLocation

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:StatementGeographical
us-gaap:BusinessAcquisition
us-gaap:Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:IntangibleAssetsNetIncludingGoodwill

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:AccountsPayableCurrent

us-gaap:AccruedLiabilitiesCurrent

us-gaap:LiabilitiesCurrent

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:DeferredIncomeTaxLiabilitiesNet
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements

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:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:RetainedEarningsAccumulatedDeficit
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
us-gaap:DebtInstrument
us-gaap:AmortizationOfFinancingCosts

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities
us-gaap:DebtInstrument
us-gaap:DebtInstrumentInterestRateStatedPercentage

us-gaap:EffectiveIncomeTaxRateContinuingOperations
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:DeferredTaxLiabilities

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

gkos:AdjustmentPercentageOfLettersOfCreditBalanceOutstanding

gkos:AmortizationOfDiscountOnShortTermInvestments

gkos:AmortizationOperatingLeaseRightOfUseAsset
us-gaap:BusinessAcquisition
gkos:BusinessCombinationConsiderationTransferredStockIssuedForReplacementAwardsAttributableToPostCombinationServices

gkos:ChangeInDeferredIncomeTaxExpenseBenefit

gkos:DeferredRentAndOtherLiabilitiesAdjustment

gkos:IncomeTaxExpenseBenefitFromCoronavirusAidReliefAndEconomicSecurityAct

gkos:IncreaseDecreaseInOthersAccruedLiabilities

gkos:IncreaseDecreaseInPrepaidExpenseAndOtherCurrentAssets

gkos:InterestAndOtherExpenseIncome

gkos:InterestAndOtherIncomeNet
us-gaap:CounterpartyName, us-gaap:SubsequentEventType
gkos:LesseeLeasingArrangementsOperatingLeasesNumberOfRenewalPeriods
us-gaap:CounterpartyName
gkos:LesseeLeasingArrangementsOperatingLeasesTenantImprovementAllowance
us-gaap:CounterpartyName, us-gaap:SubsequentEventType
us-gaap:IncomeStatementLocation, us-gaap:OtherCommitments
gkos:OtherCommitmentObligationPayments
us-gaap:DebtInstrument
gkos:PaymentForCappedCallTransactions

gkos:PaymentsForInvestmentInCompanyOwnedLifeInsurancePolicy

gkos:ProceedsFromTenantAllowance

gkos:StockOptionPlanExpenses
us-gaap:CounterpartyName, us-gaap:SubsequentEventType
gkos:UpfrontPaymentMade
us-gaap:DebtInstrument
us-gaap:AmortizationOfDebtDiscountPremium

us-gaap:AmortizationOfFinancingCostsAndDiscounts
us-gaap:DebtInstrument
us-gaap:DebtInstrument
us-gaap:ConversionOfStockSharesConverted1

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

us-gaap:FinanceLeasePrincipalPayments

us-gaap:ForeignCurrencyTransactionGainLossUnrealized

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets

us-gaap:InterestAndOtherIncome

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:PaymentsForRestructuring

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ResearchAndDevelopmentInProcess
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensationGross

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensationGross
us-gaap:StatementEquityComponents

gkos:AccruedContractPayments

gkos:AccruedEmployeeStockPurchasePlanCurrentLiabilities

gkos:AccruedLiabilitiesAndEmployeeRelatedLiabilitiesCurrent
us-gaap:BalanceSheetLocation
gkos:AccruedLiabilityForCashSettledOptionsCurrentLiabilities
us-gaap:BusinessAcquisition
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:DebtInstrument
gkos:DeferredFinanceCostsNoncurrentGrossEquityPortion
us-gaap:IncomeTaxAuthority
gkos:DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpirationUnutilizedAmount

gkos:DeferredTaxAssetsTaxDeferredExpenseLeaseLiability

gkos:DeferredTaxLiabilitiesConvertibleNotes

gkos:DeferredTaxLiabilitiesDeferredExpenseLeaseAssets

gkos:DepositAssetsAndOtherAssetsNoncurrent

gkos:FinanceAndOperatingLeaseLiability

gkos:FinanceLeaseLiabilityPaymentsDueAfterYearSix

gkos:FinanceLeaseLiabilityPaymentsDueYearSix

gkos:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour

gkos:IntangibleAssetsGrossIncludingGoodwill

gkos:LeaseRightOfUseAsset

gkos:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearSix

gkos:LesseeOperatingLeaseLiabilityPaymentsDueYearSix

gkos:LesseeOperatingLeaseOptionToExtendValue
us-gaap:IncomeTaxAuthority
gkos:NetOperatingLossCarryforwardPercentOfUtilizationForNoExpirationDate

gkos:NetWorkingCapital
us-gaap:CounterpartyName
gkos:NumberOfPropertiesLeased
us-gaap:CounterpartyName, us-gaap:SubsequentEventType
us-gaap:OtherCommitments
gkos:OneTimePaymentMadeByCompany

gkos:OtherCommitmentObligationAmount

gkos:PurchaseObligationDueAfterTwelveMonths

gkos:RestrictedCashPledgedForOfficeLeaseAgreement

gkos:RestructuringHeadcountReductionNumber
us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward
gkos:TaxCreditCarryForwardSubjectToExpirationAmount
us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward
gkos:TaxCreditCarryForwardSubjectToExpirationUnutilizedAmount
us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward
gkos:TaxCreditCarryforwardNotSubjectToExpirationAmount

us-gaap:AccountsReceivableGross

us-gaap:AccountsReceivableNet

us-gaap:AccruedBonusesCurrent

us-gaap:AccruedPayrollTaxesCurrent

us-gaap:AccruedSalesCommissionCurrent

us-gaap:AccruedVacationCurrent

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentType
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType
us-gaap:InvestmentType

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType
us-gaap:CashAndCashEquivalentsFairValueDisclosure
us-gaap:InvestmentType

us-gaap:CashCashEquivalentsAndShortTermInvestments
us-gaap:PlanName
us-gaap:CommonStockCapitalSharesReservedForFutureIssuance

us-gaap:ConvertibleDebtCurrent
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:ConvertibleLongTermNotesPayable
us-gaap:DebtInstrument
us-gaap:DebtInstrument
us-gaap:DebtInstrumentInterestRateEffectivePercentage
us-gaap:DebtInstrument
us-gaap:DebtInstrumentUnamortizedDiscount

us-gaap:DeferredCompensationLiabilityClassifiedNoncurrent

us-gaap:DeferredCompensationPlanAssets
us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:DebtInstrument
us-gaap:DeferredFinanceCostsCurrentGross
us-gaap:DebtInstrument
us-gaap:DebtInstrument
us-gaap:DeferredFinanceCostsNoncurrentGross

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards
us-gaap:IncomeTaxAuthority
us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
us-gaap:AwardType

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:InterestPayableCurrent

us-gaap:InventoryGross

us-gaap:InventoryRawMaterials

us-gaap:InventoryWorkInProcess

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentType
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType
us-gaap:InvestmentType
us-gaap:DebtInstrument
us-gaap:NotesPayableFairValueDisclosure

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwards

us-gaap:RestrictedCash

us-gaap:RestrictedCashAndCashEquivalentsNoncurrent

us-gaap:RestructuringAndRelatedCostExpectedCost1

us-gaap:RestructuringReserve
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
us-gaap:PlanName
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice
us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward
us-gaap:TaxCreditCarryforwardAmount
us-gaap:DebtInstrument
us-gaap:UnamortizedDebtIssuanceExpense

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

Plots across concepts


IncomeStatement
Comprehensive Income Net Of Tax
Expenses
Income Tax Expense Benefit
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Inventory Net
Current Assets
Prepaid Expense And Other Assets Current
NonCurrent Assets
Operating Lease Right Of Use Asset
PropertyPlantAndEquipmentNet
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Liabilities
Operating Lease Liability
Current Liabilities
Operating Lease Liability Current
Stockholders Equity
Retained Earnings Accumulated Deficit
CashFlow
Net Income Loss
NetCashProvidedByUsedInOperatingActivities
Net Income Loss
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
OperatingLeaseLiability
Operating Lease Liability Current
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Remainder Of Fiscal Year
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Accumulated Amortization
InventoryNet
Inventory Finished Goods

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:CommonStockValue ██▇▇▇▇▇▃▃▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁0.0460.0460.0450.0450.0450.0440.0440.0370.0370.0360.0360.0360.0350.0350.0350.0350.0340.0340.0340.0330.0330.0320.0320.0320.032NA0.006NANANA
us-gaap:CommonStockSharesIssued ██▇▇▇▇▇▃▃▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁46.49746.01645.27544.85544.57844.11943.5336.94536.66636.36136.13535.99535.16634.85534.64734.58234.46134.30833.97133.33732.94732.39732.20932.12831.976NA2.47NANANA
us-gaap:CommonStockSharesAuthorized ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0150.0NA77.0NANANA
us-gaap:PreferredStockSharesAuthorized ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄5.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.05.0NA0.0NANANA
us-gaap:CommonStockSharesOutstanding ██▇▇▇▇▇▃▃▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁46.46945.98845.24744.82744.5544.09143.50236.91736.63836.33336.10735.96735.13834.82734.61934.55434.43334.2833.94333.30932.91932.36932.18132.131.948NA2.422NANANA
us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted █▁46.30645.709NA44.70644.33543.766NA36.83136.4736.205NA35.541NANANANANANANANANANANANA2.912NANANA2.302NA
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount ▁█9.2039.436NA5.0235.8524.804NA3.8354.153.939NA4.9925.9916.153NA2.2965.7561.828NA0.6312.1512.006NA5.59827.11927.364NA27.42926.08NA
us-gaap:EarningsPerShareBasic NANA-0.24-0.35-0.9-1.240.92-0.37-0.17-0.040.05-0.19-0.15-0.080.030.04-0.10.030.00.030.070.03-0.07-0.06-10.96-0.4-1.9700000000000002-0.64NANA
us-gaap:EarningsPerShareDiluted NANA-0.24-0.35-0.9-1.240.84-0.37-0.17-0.040.04-0.19-0.15-0.080.030.04-0.10.020.00.030.060.03-0.07-0.07-10.96-0.4-1.9700000000000002-0.64NANA
us-gaap:EarningsPerShareBasicAndDiluted ▁█-0.38-0.36NA-0.35-0.9-1.24NA-0.37-0.17-0.04NA-0.19NANANANANANANANANANANANA-10.96NA-1.94-0.64-0.9-1.83
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:AllocatedShareBasedCompensationExpense ▅▅▅▅▆▇█▅▅▄▄▄▄▃▃▃▃▂▂▂▂▁▂▂▃▁▁▁▁7.9848.7488.7449.65910.89714.00515.5588.5478.2477.1296.6687.1736.4615.4024.9394.7174.7343.2022.6692.6512.0481.4171.5581.5524.4060.3530.40.3920.364NA
us-gaap:ComprehensiveIncomeNetOfTax ▄▄▄▄▂▁█▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▃▅▅▅▅-17.958-16.345-11.518-16.341-39.446-53.36936.074-12.902-6.25-0.9061.81-6.225-3.792-3.4150.7290.965-3.6030.5780.9331.0652.2410.88-2.334-2.045-31.889-0.966-4.617-1.458-2.07NA
us-gaap:CostOfGoodsAndServicesSold ▄▄▅▄▅█▄▂▂▂▂▁▁▁▁▁▁▁17.75916.63319.5917.93221.66832.52915.9047.7037.877.1117.1186.0116.165.7864.635.7185.5225.18NANANANANANANANANANANANA
us-gaap:GrossProfit █▇▇▆▁▃▇▇▇▆▆▅▅▅▅▅▅▄▄▄▃▃▂▂▂▂▁▁▁▁60.33451.33553.64446.8999.8922.80749.94550.80650.7346.91546.95837.89737.00134.34737.0234.69435.76330.72728.36125.69124.19719.97116.68215.68514.47311.8729.2249.888.766.305
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▆▆▆▆▂▁▄▆▇██▇▇▇██▇█████▇▇▄█▇▇▇-17.274-16.19-13.891-16.637-47.278-54.508-29.26-13.319-6.237-1.222.309-6.584-5.387-2.7060.9691.378-3.2790.9330.0371.2992.3320.897-2.257-2.057-32.512-1.462-5.242-1.966-2.494NA
us-gaap:IncomeTaxExpenseBenefit ████▇█▁████████████████0.2080.279-3.243-0.889-7.384-0.45-65.8410.1870.0720.1220.530.0370.0110.005-0.0370.0530.0220.055-0.0970.140.00.00.033NANANA0.0110.0050.00.002
us-gaap:IncomeTaxesPaidNet ▆▄▅▅▄▆▅▄▅▄▇▁▇▄▄▄▅▄█▄0.255-0.0350.0660.1240.0440.250.0750.0050.0510.040.388-0.3520.3620.003-0.0520.00.0630.0010.4490.001NANANANANANANANANANA
 us-gaap:InterestExpenseDebt us-gaap:DebtInstrument gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue2027██▁█1.9771.9771.9761.977NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▄▄▄▄▂▁█▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▃▅▅▅▅▅-17.482-16.469-10.648-15.748-39.894-54.05836.581-13.506-6.309-1.3421.779-6.621-5.398-2.7111.0061.325-3.3010.8780.1341.1592.3320.897-2.29-2.057-31.928-0.966-4.606-1.489-2.074-3.957
us-gaap:NonoperatingIncomeExpense ▇▇▇▇█▇██████▇███████████▁████-3.052-4.385-2.499-4.285-0.081-1.8960.437-0.9040.0030.720.4120.353-1.1391.0080.4370.630.5860.629-0.4310.2690.210.276-0.252-0.332-27.13-0.278-0.223-0.084-0.25NA
us-gaap:OperatingExpenses ▇▆▇▆▆██▆▆▅▅▄▄▄▄▃▄▃▃▂▂▂▂▂▂▁▁▁▁▁74.55663.1465.03659.25157.08775.41979.64263.22156.9748.85545.06144.83441.24938.06136.48833.94639.62830.42327.89324.66122.07519.3518.68717.4119.85513.05614.24311.76211.00410.331
us-gaap:OperatingIncomeLoss ▆▆▆▆▂▁▄▆▇▇█▇▇▇██▇█████▇█▇█▇▇▇▇-14.222-11.805-11.392-12.352-47.197-52.612-29.697-12.415-6.24-1.941.897-6.937-4.248-3.7140.5320.748-3.8650.3040.4681.032.1220.621-2.005-1.725-5.382-1.184-5.019-1.882-2.244-4.026
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▂▅▁▂▂▇▂▅▃▄▃▄█▂▃▂▃▂▆▄▃▃▄▃▄▃▃▄▃-0.3620.541-0.832-0.423-0.6051.169-0.4290.53-0.230.0640.0080.3221.541-0.494-0.086-0.369-0.32-0.340.8950.081-0.149-0.2850.1040.0120.0390.0-0.0110.0310.004NA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▂▄▁▂▅▅▂▅▄▅▄▅█▁▃▂▃▃▆▃▃▃▃▃▄-0.4760.124-0.87-0.5930.4480.689-0.5070.6040.0590.4360.0310.3961.606-0.704-0.277-0.36-0.302-0.30.799-0.094-0.091-0.017-0.0440.0120.039NA-0.0110.0310.004NA
 us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedOtherComprehensiveIncome▁█-0.4760.124NA-0.5930.4480.689NA0.6040.0590.436NA0.3961.606-0.704NANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss ▄▄▄▄▂▁█▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▃▅▅▅▅▅-17.482-16.469-10.648-15.748-39.894-54.05836.581-13.506-6.309-1.3421.779-6.621-5.398-2.7111.0061.325-3.3010.8780.1341.1592.3320.897-2.29-2.057-32.512-1.462-5.253-1.971-2.494-4.339
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▁█-17.482-16.469NA-15.748-39.894-54.058NA-13.506-6.309-1.342NA-6.621-5.398-2.711NANANANANANANANANANANANANANANANA
us-gaap:ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost █▆▆▆▅█▆▅▅▃▃▃▃▂▂▁▁▁24.25621.21921.24420.30418.97124.87320.03117.27817.06913.9312.95713.20212.61110.90610.5259.8059.6338.942NA7.8076.955NANANANANANANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▇█▇▃▆▇▆▆▆▆▅▄▄▄▄▄▄▃▃▃▂▂▂▂▂▂▁▁▁78.09367.96873.23464.83131.55855.33665.84958.50958.654.02654.07643.90843.16140.13341.6540.41241.28535.90733.17229.57728.55623.09220.27619.00417.75414.66614.11312.12611.0998.249
us-gaap:SellingGeneralAndAdministrativeExpense ▆▆▆▅▅▇█▆▅▅▄▄▄▄▄▃▃▃▃▂▂▂▂▂▂▁▁▁▁▁45.341.92143.79238.94738.11650.54659.61144.44337.65634.92532.10431.63228.63827.15525.96324.14124.67521.48120.49416.85415.1212.28812.39211.23712.5167.8168.9366.6696.5825.948
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:Assets █████▆▆▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁1043.7251022.7771005.502994.514995.733779.72818.4307.436302.085228.035206.97190.5171.09163.354165.836152.611145.526137.902134.371129.252124.098116.317116.661117.684128.172NA26.021NANANA
us-gaap:Liabilities ██▆▆▆▃▃▃▃▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁459.4433.003338.053332.951333.309138.421145.128117.32114.2842.54633.1127.09322.55720.32627.63420.5119.59214.94917.09719.04918.9618.25821.4722.91433.381NA29.546NANANA
us-gaap:LiabilitiesAndStockholdersEquity █████▆▆▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁1043.7251022.7771005.502994.514995.733779.72818.4307.436302.085228.035206.97190.5171.09163.354165.836152.611145.526137.902134.371129.252124.098116.317116.661117.684128.172NA26.021NANANA
us-gaap:StockholdersEquity ▇▇█████▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁584.325589.774667.449661.563662.424641.299673.272190.116187.805185.489173.86163.407148.533143.028138.202132.101125.934122.953117.274110.203105.13898.05995.19194.7794.791NA-151.299NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:AssetsCurrent ███▇▇▃▄▃▃▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁490.535474.299469.442454.445453.222231.386262.878209.288201.201183.737176.567175.247155.385147.373149.46137.221131.214123.739120.023114.591112.565104.603104.14104.833114.335NA10.554NANANA
us-gaap:CashAndCashEquivalentsAtCarryingValue ▄▃▃▃█▂▂▁▁▁▁118.29696.62596.59680.994266.97453.61462.4339.53439.99233.6829.821NANANA24.50819.31813.378.6216.4944.98812.33910.39221.57293.339104.1444.2392.3042.1642.116NA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▄▄▄▃█▂▃▂▂▂▂▂▁▁▁▁▁▁▁127.712106.041106.16290.32276.362.9471.75648.41548.8442.49338.59637.27824.94115.58724.50819.31813.378.6516.574NANANA21.652NANANANANANANA
us-gaap:AccountsReceivableNetCurrent ██▇▇▅▆█▅▄▄▄▄▃▃▃▃▃▃▃▂▂▂▁▁▁37.56936.69436.05932.88526.7328.88538.41724.34522.04120.62218.67319.65917.08917.54916.65616.94816.70214.43414.30511.74711.6179.5697.5496.986.502NA5.398NANANA
us-gaap:InventoryNet ▄▃▃▄▄▅█▃▃▃▃▃▃▃▂▂▂▂▂▂▁▁▁▁▁17.515.27115.80919.8921.08827.69942.57812.80114.03813.43213.28213.53713.81212.78211.2228.9668.3827.4856.8446.4535.5115.0614.0973.1532.908NA2.258NANANA
us-gaap:InventoryFinishedGoods ▂▂▂▂▃▅█▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁5.8436.6625.3466.3058.32818.10832.1084.266.0554.9894.2563.6773.8093.5164.2253.5183.0472.3512.0142.7421.9831.8170.9531.2371.077NA0.962NANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▇▆▆▆▅▅▄█▆▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁16.90514.95413.20613.23510.46411.0927.919.22314.7284.4284.1244.2184.3363.2782.5682.4952.342.5793.0322.7081.431.6531.291.2810.701NA0.534NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:PropertyPlantAndEquipmentGross NANA39.929NANANA34.186NANANA28.073NANANA18.249NANANA12.888NANANA6.831NANANA6.161NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType gkos:ComputerEquipmentAndSoftwareNANA2.754NANANA2.808NANANA2.232NANANA1.98NANANA1.239NANANA0.836NANANA0.762NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:ConstructionInProgressNANA5.825NANANA1.627NANANA1.231NANANA1.134NANANA1.32NANANA0.012NANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:EquipmentNANA15.737NANANA13.782NANANA10.306NANANA8.311NANANA5.342NANANA4.597NANANA4.038NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:FurnitureAndFixturesNANA1.82NANANA1.643NANANA1.57NANANA1.382NANANA0.639NANANA0.387NANANA0.376NANANA
 us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType us-gaap:LeaseholdImprovementsNANA5.851NANANA6.384NANANA4.792NANANA4.568NANANA3.474NANANA1.011NANANA0.985NANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment NANA15.921NANANA12.13NANANA8.92NANANA6.455NANANA5.295NANANA4.677NANANA4.211NANANA
us-gaap:AmortizationOfIntangibleAssets ▄▄6.2286.228NANA6.2286.228NANANANANA0.90.90.9NA0.90.90.91.00.90.90.90.90.90.90.90.90.90.9NA
us-gaap:PropertyPlantAndEquipmentNet █▇▄▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▁▁▁▁▁54.3843.31424.00823.40823.2122.7622.05620.03820.49719.53519.15312.29812.05712.06911.79410.5358.7247.8397.5936.9942.9852.2592.1541.861.859NA1.95NANANA
 us-gaap:Goodwill us-gaap:BusinessAcquisition gkos:AvedroInc.NANA66.166.13466.13466.13466.1NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▁▂▃▄▆▇█345.237351.465357.693363.921370.149376.377382.605NANANANA0.3931.3112.2293.1474.0885.0295.976.5677.4798.3929.30510.21810.8511.725NA13.475NANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▁▂▃▄▆▇█226.337232.565238.793245.021251.249257.477263.705NANANANA0.3931.3112.2293.1474.0885.0295.976.5677.4798.3929.30510.218NANANA13.475NANANA
us-gaap:IntangibleAssetsNetIncludingGoodwill ▁▂▃▅▆▇█411.371417.599423.827430.055436.283442.511448.739NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ███▇▃▄▄▁▁▂19.55119.7220.00918.7614.32815.05915.70412.14612.36912.772NANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:AccountsPayableCurrent ▄▅▂▄▅█▃▁▂▃▃▃▁▂▃▁▃▂▁▂▂▁▁▂▃6.9578.6244.3716.7749.23312.9435.7813.5015.0525.6756.2865.5953.6114.8416.2443.5585.9743.9342.9674.7144.6143.5843.6264.0995.264NA3.298NANANA
us-gaap:AccruedLiabilitiesCurrent █▆▆▅▆▅▇▄▃▃▃▃▂▂▃▂▂▁▂▂▁▁▁▁▁63.18147.94445.33139.91945.59838.13451.91929.60225.94921.67223.96419.06616.65513.70520.44916.15713.06110.62313.91111.0488.8086.9017.7936.7346.866NA6.462NANANA
us-gaap:LiabilitiesCurrent ██▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁349.477335.56449.70246.69354.83151.07757.733.10331.00127.34730.36524.77120.37118.64626.78819.80719.12414.64216.93818.84118.72917.98920.36219.67721.46NA20.187NANANA
us-gaap:OperatingLeaseLiabilityCurrent NANA1.185NANA2.4012.401NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherAccruedLiabilitiesCurrent ██▅▅▅▇▅▄▃▃▃▃▂▂▂▂▂▂▁▂▁▁▁▂▁33.2731.53221.54120.77118.51326.50720.87215.58812.04310.7169.29410.0476.2595.9435.5574.9863.7863.5892.7763.8963.3193.2542.5613.6561.291NA0.927NANANA
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us-gaap:DeferredIncomeTaxLiabilitiesNet ▁▁▃▇█▃▂8.2988.32310.51214.16415.259.9369.632NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent █▇▇▆▅▅▅▄▄▃▃▃▃▂▂▂▁▁▁▁▁▁▁▁▁8.5817.5987.0295.9825.4894.4915.1663.963.4133.0252.7452.3222.1861.680.8460.7030.4680.3070.1590.2080.2310.2690.2380.0950.01NA0.012NANANA
us-gaap:OperatingLeaseLiabilityNoncurrent ███▇▂▃▃▁▁▂20.13920.4520.70418.73413.30513.60114.19511.40611.65712.174NANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo ▂▁▄█2.6282.5552.8693.245NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree ▅▅█▁2.4122.4082.5292.23NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour ██▇▁2.4442.4442.4042.023NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive ██▇▁2.4982.4982.4442.05NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive ▁▁█20.78920.7922.995NANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:StockholdersEquity ▇▇█████▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁584.325589.774667.449661.563662.424641.299673.272190.116187.805185.489173.86163.407148.533143.028138.202132.101125.934122.953117.274110.203105.13898.05995.19194.7794.791NA-151.299NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ▇▇█████▂▂▂▁▁▁▁▁584.325589.774667.449661.563662.424641.299673.272190.116187.805185.489173.86163.407148.533143.028138.202NANANA117.274NANANA95.19194.7794.791NA-160.904NANANA
us-gaap:CommonStockValue ██▇▇▇▇▇▃▃▃▃▃▃▃▃▃▂▂▂▂▂▁▁▁▁0.0460.0460.0450.0450.0450.0440.0440.0370.0370.0360.0360.0360.0350.0350.0350.0350.0340.0340.0340.0330.0330.0320.0320.0320.032NA0.006NANANA
us-gaap:AdditionalPaidInCapitalCommonStock █▇███▇▇▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁933.328920.819976.59959.186943.706883.136861.74414.665399.452390.887378.352369.709348.611339.314331.073325.701320.5313.916308.815302.678298.678293.841291.853289.098287.074NA8.155NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▁▂▃▃▄▆█▆▇▇▇▇█████████████-349.569-332.087-310.058-299.41-283.662-243.768-189.71-226.291-212.785-206.476-205.134-206.913-200.292-194.894-192.183-193.189-194.514-191.213-192.091-192.225-193.384-195.716-196.613-194.323-192.266NA-159.372NANANA
 us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:CumulativeEffectPeriodOfAdoption,us-gaap:AdjustmentsForNewAccountingPronouncements srt:CumulativeEffectPeriodOfAdoptionAdjustment,gkos:AccountingStandardsUpdate202006NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▅▆▅▇█▇▆▇▆▆▅▅▄▁▂▃▃▄▅▃▃▃▄▄▄0.6521.1281.0041.8742.4672.0191.331.8371.2331.1740.7380.7070.311-1.295-0.591-0.3140.0460.3480.648-0.151-0.0570.0340.0510.0950.083NA0.044NANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▁█7.9848.748NA9.65913.06217.176NA8.5478.2477.129NA7.1736.4615.402NANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▅▆▂▂▁▃▃▆▄█▅▅▂▇▆▅▅▅▅7.3914.17810.604-9.57-10.923-13.099-4.191-2.9886.6020.20817.1284.3624.012-6.63811.8796.9914.3122.3263.2783.929NANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▆▆▁▆▇█▆▆▆▆▆▇▆▆▆▆▆▆▆-2.034-21.263-3.459-181.562-20.6670.62849.812-4.074-0.599-1.713-17.752-5.9322.352-5.068-7.027-1.443-1.155-2.102-2.858-10.168NANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▂▂▂█▂▁▂▂▂▂▂▂▂▂▂▂▂▂▂16.36217.4148.6595.821243.8424.22-22.0366.6660.3185.4071.97413.9262.8362.840.4330.4841.781.970.422-0.911NANANANANANANANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▅▄▅▁█▄▅▄▄▄▄▄▄▄▄▄▄▄21.671-0.12115.842-185.98213.36-8.81623.341-0.4256.3473.8971.31812.3379.354-8.9215.115.9484.7992.077NANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
 us-gaap:AmortizationOfFinancingCosts us-gaap:DebtInstrument gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue2027██▁▁0.3430.3430.1670.163NANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DepreciationDepletionAndAmortization ▁▁████▄▁▁▁▁▂▂▂▂▂▂▁▂▁▁▁▁▁▁▁▁▁1.1631.157.47.3377.3347.313.6320.9460.8860.8421.2011.7021.6961.6651.5411.5131.4191.0091.3121.1551.1331.1221.0681.0561.0721.0711.0661.057NANA
us-gaap:IncreaseDecreaseInAccountsReceivable ▆▆▇█▄▁▆▆▆▆▅▆▅▆▅▅▆▅▆▅▆▆▆▅▅▆▆▅1.1320.5473.3865.927-2.31-9.2460.8042.4751.3941.959-0.9572.565-0.2190.863-0.3020.1942.2080.0812.6210.1192.0691.9820.5750.4760.2630.8490.710.246NANA
us-gaap:IncreaseDecreaseInInventories ▄▄█▄▃▁▃▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄2.266-0.40320.616-1.182-6.828-14.568-3.664-1.1660.5950.157-0.208-0.2151.2361.492.2440.550.830.5380.7440.6120.451.1290.9480.2430.3660.2910.065-0.129NANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▅▆▂▂▁▃▃▆▄█▅▅▂▇▆▅▅▅▅7.3914.17810.604-9.57-10.923-13.099-4.191-2.9886.6020.20817.1284.3624.012-6.63811.8796.9914.3122.3263.2783.929NANANANANANANANANANA
us-gaap:NetIncomeLoss ▄▄▄▄▂▁█▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▃▅▅▅▅▅-17.482-16.469-10.648-15.748-39.894-54.05836.581-13.506-6.309-1.3421.779-6.621-5.398-2.7111.0061.325-3.3010.8780.1341.1592.3320.897-2.29-2.057-31.928-0.966-4.606-1.489-2.074-3.957
us-gaap:ProfitLoss ▄▄▄▄▂▁█▄▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▃▅▅▅▅▅-17.482-16.469-10.648-15.748-39.894-54.05836.581-13.506-6.309-1.3421.779-6.621-5.398-2.7111.0061.325-3.3010.8780.1341.1592.3320.897-2.29-2.057-32.512-1.462-5.253-1.971-2.494-4.339
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▁█-17.482-16.469NA-15.748-39.894-54.058NA-13.506-6.309-1.342NA-6.621-5.398-2.711NANANANANANANANANANANANANANANANA
us-gaap:ShareBasedCompensation ▄▄▄▅▅█▆▄▄▄▄▄▄▃▃▃▃▂▂▂▂▁▂▁▃▁▁▁7.9848.7488.7449.6610.89717.17612.478.5478.2477.1296.6687.1736.4615.4024.9394.7184.7333.2022.6692.6522.0481.4171.5581.5524.4260.3530.40.392NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▆▆▆▁▆▇█▆▆▆▆▆▇▆▆▆▆▆▆▆-2.034-21.263-3.459-181.562-20.6670.62849.812-4.074-0.599-1.713-17.752-5.9322.352-5.068-7.027-1.443-1.155-2.102-2.858-10.168NANANANANANANANANANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▆█▂▁▂▁▁▁▂▁▄▁▁▁▂▂▁▁▂▂▁▁▁▁11.3617.1822.1451.2812.7270.7821.1941.0071.8720.6517.5820.7270.761.2461.8582.3821.3110.762.0423.0170.8420.3770.3750.183NANA0.2910.268NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▂▂▂█▂▁▂▂▂▂▂▂▂▂▂▂▂▂▂16.36217.4148.6595.821243.8424.22-22.0366.6660.3185.4071.97413.9262.8362.840.4330.4841.781.970.422-0.911NANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue20272.75e-06NANANA2.75e-08NANANANANANANANANANANANANANANANANANANANANANANANANA

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value46000.046000.045000.045000.045000.044000.044000.037000.037000.036000.036000.036000.035000.035000.035000.035000.034000.034000.034000.033000.033000.032000.032000.032000.032000.06000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value464645444444433636363635353434343434333332323232312.47
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Authorized

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesAuthorized


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value15015015015015015015015015015015015015015015015015015015015015015015015015077
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Preferred Stock Shares Authorized

us-gaap:PreferredStockSharesAuthorized

us-gaap:PreferredStockSharesAuthorized


Preferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value5000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.05000000.00
Percentage of PreferredStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value464545444444433636363635353434343434333332323232312.422
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents

us-gaap:CommonStock


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value46464544444443363636363535343433322.472.1222.004
Percentage of CommonStockSharesOutstanding100.1100.1100.1100.1100.1100.1100.1100.1100.1100.1100.1100.1100.1100.1100.1100.1100.1102.00.00.0

Weighted Average Number Of Share Outstanding Basic And Diluted

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302015-06-302014-06-30
Value4645444443363636352.9122.302
Percentage of WeightedAverageNumberOfShareOutstandingBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-30
Value9.2039.4365.0235.8524.8043.8354.153.9394.9925.9916.1532.2965.7561.8280.6312.1512.0065.59827272726
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

gkos:CommonStockWarrants


Antidilutive
Period End2021-03-312015-09-302015-06-302015-03-31
Value5.1250.0060.0110.011
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount54.30.10.00.0

gkos:EmployeeAndNonemployeeStockOption


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-30
Value3.3913.644.495.3364.3283.6023.753.5724.7815.8196.1312.2965.7371.8280.6312.1511.9885.5925.3395.5835.6594.311
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount36.838.689.491.290.193.990.490.795.897.199.6100.099.7100.0100.0100.099.199.919.720.420.616.5

us-gaap:ConvertiblePreferredStock


Antidilutive
Period End2021-06-302015-06-302015-03-312014-09-302014-06-30
Value5.12521212121
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount55.780.079.178.983.0

us-gaap:EmployeeStock


Antidilutive
Period End2021-06-302021-03-312020-09-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-06-302016-03-31
Value0.0150.0170.0140.0060.0010.020.0160.0150.0310.0220.0190.018
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount0.20.20.30.10.00.50.40.30.50.40.30.9

us-gaap:RestrictedStockUnitsRSU


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value0.6720.6540.5190.5160.470.2320.380.3510.1960.1410.1660.1140.105
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount7.36.910.38.89.86.09.28.93.92.42.75.01.8

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-0.24-0.35-0.9-1.240.92-0.37-0.17-0.040.05-0.19-0.15-0.080.030.04-0.10.0300.030.070.03-0.07-0.06-10.96-0.4-1.97-0.64
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-0.24-0.35-0.9-1.240.84-0.37-0.17-0.040.04-0.19-0.15-0.080.030.04-0.10.0200.030.060.03-0.07-0.07-10.96-0.4-1.97-0.64
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic And Diluted

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:EarningsPerShareBasicAndDiluted


Earnings
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302015-06-302014-12-312014-09-302014-06-302014-03-31
Value-0.38-0.36-0.35-0.9-1.24-0.37-0.17-0.04-0.19-10.96-1.94-0.64-0.9-1.83
Percentage of EarningsPerShareBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value7.9848.7488.7449.6591014158.5478.2477.1296.6687.1736.4615.4024.9394.7174.7343.2022.6692.6512.0481.4171.5581.5524.4060.3530.40.3920.364
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.212.911.914.934.525.323.614.614.113.212.316.315.013.511.911.711.58.98.09.07.26.17.78.224.82.42.83.23.3

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType

gkos:ReplacementAwards


Allocated
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.50.51.19.3
Percentage of AllocatedShareBasedCompensationExpense6.35.710.166.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.73.516.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gkos:ReplacementAwards0.00.00.00.0

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:IncomeStatementLocation

us-gaap:CostOfSales


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value0.4520.420.4391.0290.5110.4610.3750.2590.270.2230.1770.1750.1770.1740.1620.1640.1410.130.090.0610.0440.0380.0460.0470.1440.0130.0120.0110.009
Percentage of AllocatedShareBasedCompensationExpense5.74.85.010.74.73.32.43.03.33.12.72.42.73.23.33.53.04.13.42.32.12.73.03.03.33.73.02.82.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.60.61.61.60.80.60.40.50.40.30.40.40.40.40.40.30.40.30.20.20.20.20.20.80.10.10.10.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CostOfSales0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ResearchAndDevelopmentExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value1.6341.8341.6931.8161.9973.2871.9371.5611.6371.4191.0931.461.421.2121.0911.0171.1230.7580.540.6570.6130.2670.3760.3451.0630.0760.090.090.092
Percentage of AllocatedShareBasedCompensationExpense20.521.019.418.818.323.512.518.319.819.916.420.422.022.422.121.623.723.720.224.829.918.824.122.224.121.522.523.025.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.12.72.32.86.35.92.92.72.82.62.03.33.33.02.62.52.72.11.62.22.11.21.91.86.00.50.60.70.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ResearchAndDevelopmentExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SellingGeneralAndAdministrativeExpenses


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value5.8986.4946.6126.8148.38910136.7276.345.4875.3985.5384.8644.0163.6863.5363.472.3142.0391.9331.3911.1121.1361.163.1990.2640.2980.2910.263
Percentage of AllocatedShareBasedCompensationExpense73.974.275.670.577.073.285.178.776.977.081.077.275.374.374.675.073.372.376.472.967.978.572.974.772.674.874.574.272.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.69.69.010.526.618.520.111.510.810.210.012.611.310.08.88.78.46.46.16.54.94.85.66.118.01.82.12.42.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:SellingGeneralAndAdministrativeExpenses0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-17.958-16.345-11.518-16.341-39.446-53.36936-12.902-6.25-0.9061.81-6.225-3.792-3.4150.7290.965-3.6030.5780.9331.0652.2410.88-2.334-2.045-31.889-0.966-4.617-1.458-2.07
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-23.0-24.0-15.7-25.2-125.0-96.454.8-22.1-10.7-1.73.3-14.2-8.8-8.51.82.4-8.71.62.83.67.83.8-11.5-10.8-179.6-6.6-32.7-12.0-18.7

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value171619172132157.7037.877.1117.1186.0116.165.7864.635.7185.5225.18
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.724.526.727.768.758.824.213.213.413.213.213.714.314.411.114.113.414.4

Gross Profit

us-gaap:GrossProfit

us-gaap:GrossProfit


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value605153469.892249505046463737343734353028252419161514119.2249.888.766.305
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax77.375.573.372.331.341.275.886.886.686.886.886.385.785.688.985.986.685.685.586.984.786.582.382.581.580.965.481.578.976.4

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-17274000.0-16190000.0-13891000.0-16637000.0-47278000.0-54508000.0-29260000.0-13319000.0-6237000.0-1220000.02309000.0-6584000.0-5387000.0-2706000.0969000.01378000.0-3279000.0933000.037000.01299000.02332000.0897000.0-2257000.0-2057000.0-32512000.0-1462000.0-5242000.0-1966000.0-2494000.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-22.1-23.8-19.0-25.7-149.8-98.5-44.4-22.8-10.6-2.34.3-15.0-12.5-6.72.33.4-7.92.60.14.48.23.9-11.1-10.8-183.1-10.0-37.1-16.2-22.5

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312014-09-302014-06-302014-03-31
Value208000.0279000.0-3243000.0-889000.0-7384000.0-450000.0-65841000.0187000.072000.0122000.0530000.037000.011000.05000.0-37000.053000.022000.055000.0-97000.0140000.00033000.011000.05000.002000.0
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.00.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.4-4.4-1.4-23.4-0.8-100.00.30.10.21.00.10.00.0-0.10.10.10.2-0.30.50.00.00.20.10.00.00.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value255000.0-35000.066000.0124000.044000.0250000.075000.05000.051000.040000.0388000.0-352000.0362000.03000.0-52000.0063000.01000.0449000.01000.0
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.3-0.10.10.20.10.50.10.00.10.10.7-0.80.80.0-0.10.00.20.01.40.0

Interest Expense Debt

us-gaap:InterestExpenseDebt us-gaap:DebtInstrument

us-gaap:InterestExpenseDebt

gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue2027


Interest
Period End2021-06-302021-03-312020-12-312020-09-30
Value1.9771.9771.9761.977
Percentage of InterestExpenseDebt100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.52.92.73.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue20270.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-17.482-16.469-10.648-15.748-39.894-54.05836-13.506-6.309-1.3421.779-6.621-5.398-2.7111.0061.325-3.3010.8780.1341.1592.3320.897-2.29-2.057-31.928-0.966-4.606-1.489-2.074-3.957
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-22.4-24.2-14.5-24.3-126.4-97.755.6-23.1-10.8-2.53.3-15.1-12.5-6.82.43.3-8.02.40.43.98.23.9-11.3-10.8-179.8-6.6-32.6-12.3-18.7-48.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-3052000.0-4385000.0-2499000.0-4285000.0-81000.0-1896000.0437000.0-904000.03000.0720000.0412000.0353000.0-1139000.01008000.0437000.0630000.0586000.0629000.0-431000.0269000.0210000.0276000.0-252000.0-332000.0-27130000.0-278000.0-223000.0-84000.0-250000.0
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.9-6.5-3.4-6.6-0.3-3.40.7-1.50.01.30.80.8-2.62.51.01.61.41.8-1.30.90.71.2-1.2-1.7-152.8-1.9-1.6-0.7-2.3

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value746365595775796356484544413836333930272422191817191314111110
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax95.592.988.891.4180.9136.3120.9108.197.290.483.3102.195.694.887.684.096.084.784.183.477.383.892.291.6111.889.0100.997.099.1125.2

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-14222000.0-11805000.0-11392000.0-12352000.0-47197000.0-52612000.0-29697000.0-12415000.0-6240000.0-1940000.01897000.0-6937000.0-4248000.0-3714000.0532000.0748000.0-3865000.0304000.0468000.01030000.02122000.0621000.0-2005000.0-1725000.0-5382000.0-1184000.0-5019000.0-1882000.0-2244000.0-4026000.0
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-18.2-17.4-15.6-19.1-149.6-95.1-45.1-21.2-10.6-3.63.5-15.8-9.8-9.31.31.9-9.40.81.43.57.42.7-9.9-9.1-30.3-8.1-35.6-15.5-20.2-48.8

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-362000.0541000.0-832000.0-423000.0-605000.01169000.0-429000.0530000.0-230000.064000.08000.0322000.01541000.0-494000.0-86000.0-369000.0-320000.0-340000.0895000.081000.0-149000.0-285000.0104000.012000.039000.00-11000.031000.04000.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.50.8-1.1-0.7-1.92.1-0.70.9-0.40.10.00.73.6-1.2-0.2-0.9-0.8-0.92.70.3-0.5-1.20.50.10.20.0-0.10.30.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-30
Value-476000.0124000.0-870000.0-593000.0448000.0689000.0-507000.0604000.059000.0436000.031000.0396000.01606000.0-704000.0-277000.0-360000.0-302000.0-300000.0799000.0-94000.0-91000.0-17000.0-44000.012000.039000.0-11000.031000.04000.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.60.2-1.2-0.91.41.2-0.81.00.10.80.10.93.7-1.8-0.7-0.9-0.7-0.82.4-0.3-0.3-0.1-0.20.10.2-0.10.30.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-476000.0124000.0-593000.0448000.0689000.0604000.059000.0436000.0396000.01606000.0-704000.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.60.2-0.91.41.21.00.10.80.93.7-1.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-17.482-16.469-10.648-15.748-39.894-54.05836-13.506-6.309-1.3421.779-6.621-5.398-2.7111.0061.325-3.3010.8780.1341.1592.3320.897-2.29-2.057-32.512-1.462-5.253-1.971-2.494-4.339
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-22.4-24.2-14.5-24.3-126.4-97.755.6-23.1-10.8-2.53.3-15.1-12.5-6.82.43.3-8.02.40.43.98.23.9-11.3-10.8-183.1-10.0-37.2-16.3-22.5-52.6

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-17.482-16.469-15.748-39.894-54.058-13.506-6.309-1.342-6.621-5.398-2.711
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-22.4-24.2-24.3-126.4-97.7-23.1-10.8-2.5-15.1-12.5-6.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Research And Development Expense Excluding Acquired In Process Cost

us-gaap:ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost

us-gaap:ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost


Research
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-30
Value2421212018242017171312131210109.8059.6338.9427.8076.955
Percentage of ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax31.131.229.031.360.144.930.429.529.125.824.030.129.227.225.324.323.324.926.424.4

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value78677364315565585854544343404140413533292823201917141412118.249
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

gkos:CornealHealth


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value151414126.6111
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.721.020.319.920.920.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax19.721.020.319.920.920.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gkos:CornealHealth100.0100.0100.0100.0100.0100.0

gkos:Glaucoma


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value62535851244459585854
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax80.379.079.780.179.179.890.9100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax80.379.079.780.179.179.890.9100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gkos:Glaucoma100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService, us-gaap:StatementGeographical

gkos:CornealHealth, country:US


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value13125.9188.807
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.917.718.815.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax16.917.718.815.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gkos:CornealHealth country:US100.0100.0100.0100.0

gkos:CornealHealth, us-gaap:NonUs


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value2.1512.2140.6922.396
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.83.32.24.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.83.32.24.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gkos:CornealHealth us-gaap:NonUs100.0100.0100.0100.0

gkos:Glaucoma, country:US


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value46391832
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax59.358.757.858.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax59.358.757.858.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gkos:Glaucoma country:US100.0100.0100.0100.0

gkos:Glaucoma, us-gaap:NonUs


Revenue
Period End2021-06-302021-03-312020-06-302020-03-31
Value16136.69711
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.020.321.220.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.020.321.220.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax gkos:Glaucoma us-gaap:NonUs100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical

country:US


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value5951565024415247484445363633363537313026262119181613131110
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax76.276.477.778.076.674.879.881.382.181.883.882.984.183.887.288.289.888.891.191.192.193.395.495.293.892.893.793.494.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax76.276.477.778.076.674.879.881.382.181.883.882.984.183.887.288.289.888.891.191.192.193.395.495.293.892.893.793.494.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value181616147.389131310109.8088.7367.4956.856.525.3474.7654.214.032.9532.6422.2571.550.940.9131.0991.0490.8950.7960.595
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.823.622.322.023.425.220.218.717.918.216.217.115.916.212.811.810.211.28.98.97.96.74.64.86.27.26.36.65.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.823.622.322.023.425.220.218.717.918.216.217.115.916.212.811.810.211.28.98.97.96.74.64.86.27.26.36.65.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value454143383850594437343231282725242421201615121211127.8168.9366.6696.5825.948
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax58.061.759.860.1120.891.390.576.064.364.659.472.066.467.762.359.759.859.861.857.052.953.261.159.170.553.363.355.059.372.1

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value10431022100599499577981830730222820619017116316515214513713412912411611611712826
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value4594333383323331381451171144233272220272019141719181821223329
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets44.042.333.633.533.517.817.738.237.818.716.014.213.212.416.713.413.510.812.714.715.315.718.419.526.0113.5

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value10431022100599499577981830730222820619017116316515214513713412912411611611712826
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value58458966766166264167319018718517316314814313813212512211711010598959494-151.299
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets56.057.766.466.566.582.282.361.862.281.384.085.886.887.683.386.686.589.287.385.384.784.381.680.574.0-581.4

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value49047446945445323126220920118317617515514714913713112312011411210410410411410
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets47.046.446.745.745.529.732.168.166.680.685.392.090.890.290.189.990.289.789.388.790.789.989.389.189.240.6

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-31
Value1189696802665362393933292419138.6216.4944.988121021931044.2392.3042.1642.1166.7281.732
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.39.49.68.126.86.97.612.913.214.814.414.812.79.26.34.83.99.98.918.579.381.30.08.90.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value127106106902766271484842383724152419138.6516.57421
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.210.410.69.127.78.18.815.716.218.618.619.614.69.514.812.79.26.34.918.6

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value3736363226283824222018191717161616141411119.5697.5496.986.5025.398
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.63.63.63.32.73.74.77.97.39.09.010.310.010.710.011.111.510.510.69.19.48.26.55.95.120.7

Inventory Net

us-gaap:InventoryNet

us-gaap:InventoryNet


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value1715151921274212141313131312118.9668.3827.4856.8446.4535.5115.0614.0973.1532.9082.258
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.71.51.62.02.13.65.24.24.65.96.47.18.17.86.85.95.85.45.15.04.44.43.52.72.38.7

Inventory Finished Goods

us-gaap:InventoryFinishedGoods

us-gaap:InventoryFinishedGoods


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value5.8436.6625.3466.3058.32818324.266.0554.9894.2563.6773.8093.5164.2253.5183.0472.3512.0142.7421.9831.8170.9531.2371.0770.962
Percentage of InventoryFinishedGoods100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.70.50.60.82.33.91.42.02.22.11.92.22.22.52.32.11.71.52.11.61.60.81.10.83.7

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value1614131310117.919144.4284.1244.2184.3363.2782.5682.4952.342.5793.0322.7081.431.6531.291.2810.7010.534
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.51.31.31.11.41.06.34.91.92.02.22.52.01.51.61.61.92.32.11.21.41.11.10.52.1

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value39342818126.8316.161
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.04.213.611.09.65.923.7

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

gkos:ComputerEquipmentAndSoftware


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value2.7542.8082.2321.981.2390.8360.762
Percentage of PropertyPlantAndEquipmentGross6.98.28.010.89.612.212.4
Percentage of Assets0.30.31.11.20.90.72.9
Percentage of Assets gkos:ComputerEquipmentAndSoftware0.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value5.8251.6271.2311.1341.320.012
Percentage of PropertyPlantAndEquipmentGross14.64.84.46.210.20.2
Percentage of Assets0.60.20.60.71.00.0
Percentage of Assets us-gaap:ConstructionInProgress0.00.00.00.00.00.0

us-gaap:Equipment


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1513108.3115.3424.5974.038
Percentage of PropertyPlantAndEquipmentGross39.440.336.745.541.467.365.5
Percentage of Assets1.61.75.05.04.03.915.5
Percentage of Assets us-gaap:Equipment0.00.00.00.00.00.00.0

us-gaap:FurnitureAndFixtures


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1.821.6431.571.3820.6390.3870.376
Percentage of PropertyPlantAndEquipmentGross4.64.85.67.65.05.76.1
Percentage of Assets0.20.20.80.80.50.31.4
Percentage of Assets us-gaap:FurnitureAndFixtures0.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value5.8516.3844.7924.5683.4741.0110.985
Percentage of PropertyPlantAndEquipmentGross14.718.717.125.027.014.816.0
Percentage of Assets0.60.82.32.82.60.93.8
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value15128.926.4555.2954.6774.211
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.54.33.93.94.016.2

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-06-302020-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value6.2286.2286.2286.2280.90.90.90.90.90.91.00.90.90.90.90.90.90.90.90.90.9
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AmortizationOfIntangibleAssets us-gaap:BusinessAcquisition, us-gaap:IncomeStatementLocation

gkos:AvedroInc., us-gaap:CostOfSales


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value5.55.55.4999999999999985.55.55.5
Percentage of AmortizationOfIntangibleAssets88.388.30.00.088.388.3
Percentage of Assets0.00.00.00.00.00.0
Percentage of Assets gkos:AvedroInc. us-gaap:CostOfSales0.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-31
Value544324232322222020191912121211108.7247.8397.5936.9942.9852.2592.1541.861.8591.951.866
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.24.22.42.42.32.92.76.56.88.69.36.57.07.47.16.96.05.75.75.42.41.91.81.61.57.50.0

us-gaap:PropertyPlantAndEquipmentNet us-gaap:StatementGeographical

country:US


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value232119117.4632.0121.7841.684
Percentage of PropertyPlantAndEquipmentNet99.599.499.499.098.393.491.590.2
Percentage of Assets2.42.79.27.05.61.76.90.0
Percentage of Assets country:US0.00.00.00.00.00.00.00.0

us-gaap:NonUs


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value0.1120.1240.1130.1170.130.1420.1660.182
Percentage of PropertyPlantAndEquipmentNet0.50.60.61.01.76.68.59.8
Percentage of Assets0.00.00.10.10.10.10.60.0
Percentage of Assets us-gaap:NonUs0.00.00.00.00.00.00.00.0

Goodwill

us-gaap:Goodwill us-gaap:BusinessAcquisition

us-gaap:Goodwill

gkos:AvedroInc.


Goodwillus-gaap:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-11-21
Value666666666666
Percentage of Goodwill100.0100.0100.0100.0100.0100.0
Percentage of Assets6.66.66.68.58.10.0
Percentage of Assets gkos:AvedroInc.0.00.00.00.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value3453513573633703763820.3931.3112.2293.1474.0885.0295.976.5677.4798.3929.30510101113
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets33.134.435.636.637.248.346.80.20.81.41.92.73.54.34.95.86.88.08.89.29.151.8

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value2262322382452512572630.3931.3112.2293.1474.0885.0295.976.5677.4798.3929.3051013
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets21.722.723.724.625.233.032.20.20.81.41.92.73.54.34.95.86.88.08.851.8

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:AccountingStandardsUpdate201815


Finite
Period End2020-12-31
Value1.9
Percentage of FiniteLivedIntangibleAssetsNet0.8
Percentage of Assets0.2
Percentage of Assets us-gaap:AccountingStandardsUpdate2018150.0

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value9.576101011121313
Percentage of FiniteLivedIntangibleAssetsNet4.24.44.64.84.95.15.2
Percentage of Assets0.91.01.11.21.21.71.7
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.0

us-gaap:DevelopedTechnologyRights


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value216222227233238244249
Percentage of FiniteLivedIntangibleAssetsNet95.895.695.495.295.194.994.8
Percentage of Assets20.821.722.723.524.031.330.5
Percentage of Assets us-gaap:DevelopedTechnologyRights0.00.00.00.00.00.00.0

Intangible Assets Net Including Goodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value411417423430436442448
Percentage of IntangibleAssetsNetIncludingGoodwill100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets39.440.842.243.243.856.854.8

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value19192018141515121212
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.91.92.01.91.41.91.94.04.15.6

Accounts Payable Current

us-gaap:AccountsPayableCurrent

us-gaap:AccountsPayableCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value6.9578.6244.3716.7749.233125.7813.5015.0525.6756.2865.5953.6114.8416.2443.5585.9743.9342.9674.7144.6143.5843.6264.0995.2643.298
Percentage of AccountsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.80.40.70.91.70.71.11.72.53.02.92.13.03.82.34.12.92.23.63.73.13.13.54.112.7

Accrued Liabilities Current

us-gaap:AccruedLiabilitiesCurrent

us-gaap:AccruedLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value63474539453851292521231916132016131013118.8086.9017.7936.7346.8666.462
Percentage of AccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.14.74.54.04.64.96.39.68.69.511.610.09.78.412.310.69.07.710.48.57.15.96.75.75.424.8

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value349335494654515733312730242018261919141618181720192120
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets33.532.84.94.75.56.67.110.810.312.014.713.011.911.416.213.013.110.612.614.615.115.517.516.716.777.6

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityCurrent


Operating
Period End2020-12-312020-03-312019-12-31
Value1185000.02401000.02401000.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0
Percentage of Assets0.10.30.3

Other Accrued Liabilities Current

us-gaap:OtherAccruedLiabilitiesCurrent

us-gaap:OtherAccruedLiabilitiesCurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value333121201826201512109.294106.2595.9435.5574.9863.7863.5892.7763.8963.3193.2542.5613.6561.2910.927
Percentage of OtherAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.23.12.12.11.93.42.65.14.04.74.55.33.73.63.43.32.62.62.13.02.72.82.23.11.03.6

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value8.2988.3231014159.9369.632
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.81.01.41.51.31.2

us-gaap:DeferredIncomeTaxLiabilitiesNet us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements

srt:CumulativeEffectPeriodOfAdoptionAdjustment, gkos:AccountingStandardsUpdate202006


Deferred
Period End2021-01-01
Value-2.2
Percentage of DeferredIncomeTaxLiabilitiesNet0.0
Percentage of Assets0.0
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment gkos:AccountingStandardsUpdate2020060.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value8581000.07598000.07029000.05982000.05489000.04491000.05166000.03960000.03413000.03025000.02745000.02322000.02186000.01680000.0846000.0703000.0468000.0307000.0159000.0208000.0231000.0269000.0238000.095000.010000.012000.0
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.70.70.60.60.60.61.31.11.31.31.21.31.00.50.50.30.20.10.20.20.20.20.10.00.0

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value20202018131314111112
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.92.02.11.91.31.71.73.73.95.3

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
Value2628000.02555000.02869000.03245000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0
Percentage of Assets0.30.20.30.3

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
Value2412000.02408000.02529000.02230000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0
Percentage of Assets0.20.20.30.2

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
Value2444000.02444000.02404000.02023000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0
Percentage of Assets0.20.20.20.2

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value2498000.02498000.02444000.02050000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0100.0100.0
Percentage of Assets0.20.20.20.2

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2021-06-302021-03-312020-12-31
Value202022
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0
Percentage of Assets2.02.02.3

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-302019-03-31
Value2121212016121313
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.12.12.22.02.04.24.35.9

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value35353633
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0
Percentage of Assets3.43.53.63.4

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value13131413
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0
Percentage of Assets1.31.41.41.3

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value58458966766166264167319018718517316314814313813212512211711010598959494-151.299
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets56.057.766.466.566.582.282.361.862.281.384.085.886.887.683.386.686.589.287.385.384.784.381.680.574.0-581.4

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-31
Value584589667661662641673190187185173163148143138117959494-160.904-149.042-136.204
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets56.057.766.466.566.582.282.361.862.281.384.085.886.887.683.387.381.680.574.0-618.40.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements

srt:CumulativeEffectPeriodOfAdoptionAdjustment, gkos:AccountingStandardsUpdate202006


Stockholders
Period End2020-12-31
Value-87.113
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-13.1
Percentage of Assets-8.7
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment gkos:AccountingStandardsUpdate2020060.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:StatementEquityComponents

srt:CumulativeEffectPeriodOfAdoptionAdjustment, gkos:AccountingStandardsUpdate202006, us-gaap:AdditionalPaidInCapital


Stockholders
Period End2020-12-31
Value-81.553
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-12.2
Percentage of Assets-8.1
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment gkos:AccountingStandardsUpdate202006 us-gaap:AdditionalPaidInCapital0.0

srt:CumulativeEffectPeriodOfAdoptionAdjustment, gkos:AccountingStandardsUpdate202006, us-gaap:RetainedEarnings


Stockholders
Period End2020-12-31
Value-5.56
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.8
Percentage of Assets-0.6
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment gkos:AccountingStandardsUpdate202006 us-gaap:RetainedEarnings0.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value0.6521.1281.0041.8742.4672.0191.331.8371.2331.1740.7380.7070.311-1.295-0.5910.6480.0510.0440.002
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.20.20.30.40.30.21.00.70.60.40.40.2-0.9-0.40.60.1-0.0-0.0
Percentage of Assets0.10.10.10.20.20.30.20.60.40.50.40.40.2-0.8-0.40.50.00.20.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value9339209769599438838614143993903783693483393313082918.1556.0734.555
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest159.7156.1146.3145.0142.5137.7128.0218.1212.7210.7217.6226.3234.7237.2239.6263.3306.6-5.1-4.1-3.3
Percentage of Assets89.490.097.196.494.8113.3105.3134.9132.2171.4182.8194.1203.8207.7199.6229.8250.231.30.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value0.0460.0460.0450.0450.0450.0440.0440.0370.0370.0360.0360.0360.0350.0350.0350.0340.0320.0060.0050.005
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.0-0.0-0.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value-349.569-332.087-310.058-299.41-283.662-243.768-189.71-226.291-212.785-206.476-205.134-206.913-200.292-194.894-192.183-192.091-196.613-159.372-147.246-134.607
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-59.8-56.3-46.5-45.3-42.8-38.0-28.2-119.0-113.3-111.3-118.0-126.6-134.8-136.3-139.1-163.8-206.599.098.898.8
Percentage of Assets-33.5-32.5-30.8-30.1-28.5-31.3-23.2-73.6-70.4-90.5-99.1-108.6-117.1-119.3-115.9-143.0-168.5-612.50.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value46000.046000.045000.045000.045000.044000.044000.037000.037000.036000.036000.036000.035000.035000.035000.035000.034000.034000.034000.033000.033000.032000.032000.032000.032000.06000.0
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value9339209769599438838614143993903783693483393313253203133083022982932912892878.155
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets89.490.097.196.494.8113.3105.3134.9132.2171.4182.8194.1203.8207.7199.6213.4220.2227.6229.8234.2240.7252.6250.2245.7224.031.3

us-gaap:AdditionalPaidInCapitalCommonStock us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements

srt:CumulativeEffectPeriodOfAdoptionAdjustment, gkos:AccountingStandardsUpdate202006


Additional
Period End2021-01-01
Value-81.6
Percentage of AdditionalPaidInCapitalCommonStock0.0
Percentage of Assets0.0
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment gkos:AccountingStandardsUpdate2020060.0

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value-349570000.0-332090000.0-310060000.0-299410000.0-283660000.0-243770000.0-189710000.0-226290000.0-212780000.0-206480000.0-205130000.0-206910000.0-200290000.0-194890000.0-192180000.0-193190000.0-194510000.0-191210000.0-192090000.0-192220000.0-193380000.0-195720000.0-196610000.0-194320000.0-192270000.0-159370000.0
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-33.5-32.5-30.8-30.1-28.5-31.3-23.2-73.6-70.4-90.5-99.1-108.6-117.1-119.3-115.9-126.6-133.7-138.7-143.0-148.7-155.8-168.3-168.5-165.1-150.0-612.5

us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements

srt:CumulativeEffectPeriodOfAdoptionAdjustment, gkos:AccountingStandardsUpdate202006


Retained
Period End2021-01-01
Value-5500000.0
Percentage of RetainedEarningsAccumulatedDeficit0.0
Percentage of Assets0.0
Percentage of Assets srt:CumulativeEffectPeriodOfAdoptionAdjustment gkos:AccountingStandardsUpdate2020060.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value652000.01128000.01004000.01874000.02467000.02019000.01330000.01837000.01233000.01174000.0738000.0707000.0311000.0-1295000.0-591000.0-314000.046000.0348000.0648000.0-151000.0-57000.034000.051000.095000.083000.044000.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.20.20.30.20.60.40.50.40.40.2-0.8-0.4-0.20.00.30.5-0.1-0.00.00.00.10.10.2

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value7.9848.7489.65913178.5478.2477.1297.1736.4615.402
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value7.9848.7489.65913178.5478.2477.1297.1736.4615.402
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value7.3914.17810-9.57-10.923-13.099-4.191-2.9886.6020.208174.3624.012-6.638116.9914.3122.3263.2783.929
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.56.114.5-14.8-34.6-23.7-6.4-5.111.30.431.79.99.3-16.528.517.310.46.59.913.3

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-2.034-21.263-3.459-181.562-20.6670.62849-4.074-0.599-1.713-17.752-5.9322.352-5.068-7.027-1.443-1.155-2.102-2.858-10.168
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.6-31.3-4.7-280.1-65.51.175.6-7.0-1.0-3.2-32.8-13.55.4-12.6-16.9-3.6-2.8-5.9-8.6-34.4

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value16178.6595.8212434.22-22.0366.6660.3185.4071.974132.8362.840.4330.4841.781.970.422-0.911
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.025.611.89.0772.77.6-33.511.40.510.03.731.76.67.11.01.24.35.51.3-3.1

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value21-0.12115-185.98213-8.81623-0.4256.3473.8971.318129.354-8.9215.115.9484.7992.077
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax27.8-0.221.6-286.9676.1-15.935.4-0.710.87.22.428.121.7-22.212.314.711.65.8

Amortization Of Financing Costs

us-gaap:AmortizationOfFinancingCosts us-gaap:DebtInstrument

us-gaap:AmortizationOfFinancingCosts

gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue2027


Amortization
Period End2021-06-302021-03-312020-12-312020-09-30
Value343000.0343000.0167000.0163000.0
Percentage of AmortizationOfFinancingCosts100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value1.1631.157.47.3377.3347.313.6320.9460.8860.8421.2011.7021.6961.6651.5411.5131.4191.0091.3121.1551.1331.1221.0681.0561.0721.0711.0661.057
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value1132000.0547000.03386000.05927000.0-2310000.0-9246000.0804000.02475000.01394000.01959000.0-957000.02565000.0-219000.0863000.0-302000.0194000.02208000.081000.02621000.0119000.02069000.01982000.0575000.0476000.0263000.0849000.0710000.0246000.0
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories

us-gaap:IncreaseDecreaseInInventories


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value2.266-0.40320-1.182-6.828-14.568-3.664-1.1660.5950.157-0.208-0.2151.2361.492.2440.550.830.5380.7440.6120.451.1290.9480.2430.3660.2910.065-0.129
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value7.3914.17810-9.57-10.923-13.099-4.191-2.9886.6020.208174.3624.012-6.638116.9914.3122.3263.2783.929
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.56.114.5-14.8-34.6-23.7-6.4-5.111.30.431.79.99.3-16.528.517.310.46.59.913.3

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-17.482-16.469-10.648-15.748-39.894-54.05836-13.506-6.309-1.3421.779-6.621-5.398-2.7111.0061.325-3.3010.8780.1341.1592.3320.897-2.29-2.057-31.928-0.966-4.606-1.489-2.074-3.957
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-22.4-24.2-14.5-24.3-126.4-97.755.6-23.1-10.8-2.53.3-15.1-12.5-6.82.43.3-8.02.40.43.98.23.9-11.3-10.8-179.8-6.6-32.6-12.3-18.7-48.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-17.482-16.469-10.648-15.748-39.894-54.05836-13.506-6.309-1.3421.779-6.621-5.398-2.7111.0061.325-3.3010.8780.1341.1592.3320.897-2.29-2.057-32.512-1.462-5.253-1.971-2.494-4.339
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-22.4-24.2-14.5-24.3-126.4-97.755.6-23.1-10.8-2.53.3-15.1-12.5-6.82.43.3-8.02.40.43.98.23.9-11.3-10.8-183.1-10.0-37.2-16.3-22.5-52.6

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-17.482-16.469-15.748-39.894-54.058-13.506-6.309-1.342-6.621-5.398-2.711
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-22.4-24.2-24.3-126.4-97.7-23.1-10.8-2.5-15.1-12.5-6.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value7.9848.7488.7449.661017128.5478.2477.1296.6687.1736.4615.4024.9394.7184.7333.2022.6692.6522.0481.4171.5581.5524.4260.3530.40.392
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-2.034-21.263-3.459-181.562-20.6670.62849-4.074-0.599-1.713-17.752-5.9322.352-5.068-7.027-1.443-1.155-2.102-2.858-10.168
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.6-31.3-4.7-280.1-65.51.175.6-7.0-1.0-3.2-32.8-13.55.4-12.6-16.9-3.6-2.8-5.9-8.6-34.4

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-30
Value11172.1451.2812.7270.7821.1941.0071.8720.6517.5820.7270.761.2461.8582.3821.3110.762.0423.0170.8420.3770.3750.1830.2910.268
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value16178.6595.8212434.22-22.0366.6660.3185.4071.974132.8362.840.4330.4841.781.970.422-0.911
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax21.025.611.89.0772.77.6-33.511.40.510.03.731.76.67.11.01.24.35.51.3-3.1

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument

us-gaap:DebtInstrumentInterestRateStatedPercentage

gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue2027


Debt
Period End2021-06-302020-06-302020-06-11
Value2.750.02750.0275
Percentage of DebtInstrumentInterestRateStatedPercentage100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue20270.00.00.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-09-302020-06-302019-09-302019-06-30
Value-1.2-0.885.30.156-0.014-0.011
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber

gkos:AggregateStockBasedCompensationPlans


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value5984000.06583000.06307000.07026000.05911000.05701000.05657000.04472000.03823000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

gkos:AggregateStockBasedCompensationPlans


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value27.5923.9123.6921.3612.577.13.932.652.28
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-31
Value109.632
Percentage of DeferredTaxLiabilities100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value24232219181715131313137.27.27.2275.9474.8484.0663.2721.211
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value45327165727566
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0

gkos:AdjustmentPercentageOfLettersOfCreditBalanceOutstanding

gkos:AdjustmentPercentageOfLettersOfCreditBalanceOutstanding


Adjustment
Period End2021-06-302021-03-312020-12-312020-03-312019-12-312019-09-302019-06-302019-03-31
Value020.000.20000.2
Percentage of AdjustmentPercentageOfLettersOfCreditBalanceOutstanding0.0100.00.0100.00.00.00.0100.0

gkos:AmortizationOfDiscountOnShortTermInvestments

gkos:AmortizationOfDiscountOnShortTermInvestments


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value260000.0256000.0224000.0196000.052000.0-19000.0-40000.0-77000.0
Percentage of AmortizationOfDiscountOnShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0

gkos:AmortizationOperatingLeaseRightOfUseAsset

gkos:AmortizationOperatingLeaseRightOfUseAsset


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1117000.01170000.01396000.01259000.01266000.01311000.01152000.01009000.0996000.0400000.0
Percentage of AmortizationOperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gkos:BusinessCombinationConsiderationTransferredStockIssuedForReplacementAwardsAttributableToPostCombinationServices us-gaap:BusinessAcquisition

gkos:BusinessCombinationConsiderationTransferredStockIssuedForReplacementAwardsAttributableToPostCombinationServices

gkos:AvedroInc.


Business
Period End2021-06-302021-03-312020-12-31
Value0.0260.0
Percentage of BusinessCombinationConsiderationTransferredStockIssuedForReplacementAwardsAttributableToPostCombinationServices0.0100.00.0

gkos:ChangeInDeferredIncomeTaxExpenseBenefit

gkos:ChangeInDeferredIncomeTaxExpenseBenefit


Change
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-24000.0-24000.0-2836000.0-1086000.0-7545000.0-709000.0
Percentage of ChangeInDeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0

gkos:DeferredRentAndOtherLiabilitiesAdjustment

gkos:DeferredRentAndOtherLiabilitiesAdjustment


Deferred
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1195000.01019000.02117000.0207000.01686000.01576000.01401000.0689000.0428000.0141000.0511000.0839000.0145000.0
Percentage of DeferredRentAndOtherLiabilitiesAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gkos:IncomeTaxExpenseBenefitFromCoronavirusAidReliefAndEconomicSecurityAct

gkos:IncomeTaxExpenseBenefitFromCoronavirusAidReliefAndEconomicSecurityAct


Income
Period End2020-09-30
Value-400000.0
Percentage of IncomeTaxExpenseBenefitFromCoronavirusAidReliefAndEconomicSecurityAct100.0

gkos:IncreaseDecreaseInOthersAccruedLiabilities

gkos:IncreaseDecreaseInOthersAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-06-302020-03-31
Value981000.0570000.02117000.0207000.0
Percentage of IncreaseDecreaseInOthersAccruedLiabilities100.0100.0100.0100.0

gkos:IncreaseDecreaseInPrepaidExpenseAndOtherCurrentAssets

gkos:IncreaseDecreaseInPrepaidExpenseAndOtherCurrentAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-1955000.0-1803000.0-704000.0-2723000.0629000.0-2235000.01409000.0-2788000.0635000.0-173000.0-61000.0106000.0-1093000.0-708000.0-74000.0-153000.0243000.0478000.0-3158000.01265000.0-224000.0355000.07000.0581000.0224000.0-57000.0152000.0-174000.0
Percentage of IncreaseDecreaseInPrepaidExpenseAndOtherCurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gkos:InterestAndOtherExpenseIncome

gkos:InterestAndOtherExpenseIncome


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-3306000.0-3229000.0-5732000.0-1872000.0-881000.0-1028000.0-1013000.0
Percentage of InterestAndOtherExpenseIncome100.0100.0100.0100.0100.0100.0100.0

gkos:InterestAndOtherIncomeNet

gkos:InterestAndOtherIncomeNet


Interest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-88000.0-1539000.0852000.01201000.0-1711000.0-656000.0216000.0
Percentage of InterestAndOtherIncomeNet100.0100.0100.0100.0100.0100.0100.0

gkos:LesseeLeasingArrangementsOperatingLeasesNumberOfRenewalPeriods us-gaap:CounterpartyName, us-gaap:SubsequentEventType

gkos:LesseeLeasingArrangementsOperatingLeasesNumberOfRenewalPeriods

gkos:DomesticOfficeLeases, us-gaap:SubsequentEvent


Lessee
Period End2020-07-31
Value1.0
Percentage of LesseeLeasingArrangementsOperatingLeasesNumberOfRenewalPeriods100.0

gkos:LesseeLeasingArrangementsOperatingLeasesTenantImprovementAllowance us-gaap:CounterpartyName

gkos:LesseeLeasingArrangementsOperatingLeasesTenantImprovementAllowance

gkos:DomesticOfficeLeases


Lessee
Period End2020-07-31
Value0.8
Percentage of LesseeLeasingArrangementsOperatingLeasesTenantImprovementAllowance100.0

gkos:LesseeLeasingArrangementsOperatingLeasesTenantImprovementAllowance us-gaap:CounterpartyName, us-gaap:SubsequentEventType

gkos:DomesticOfficeLeases, us-gaap:SubsequentEvent


Lessee
Period End2020-07-31
Value0.8
Percentage of LesseeLeasingArrangementsOperatingLeasesTenantImprovementAllowance100.0

gkos:OtherCommitmentObligationPayments us-gaap:IncomeStatementLocation, us-gaap:OtherCommitments

gkos:OtherCommitmentObligationPayments

us-gaap:CostOfSales, gkos:AgreementWithRegentsOfUniversityOfCalifornia


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1200000.0900000.01500000.01300000.0600000.01100000.01500000.01500000.01500000.01300000.01300000.01100000.01100000.01000000.01000000.01000000.01000000.0900000.0800000.0700000.0700000.0600000.0500000.0500000.0400000.0400000.0
Percentage of OtherCommitmentObligationPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gkos:PaymentForCappedCallTransactions us-gaap:DebtInstrument

gkos:PaymentForCappedCallTransactions

gkos:CappedCallTransactions


Payment
Period End2021-06-302021-03-312020-09-302020-06-30
Value0.0350.035
Percentage of PaymentForCappedCallTransactions0.0100.00.0100.0

gkos:PaymentsForInvestmentInCompanyOwnedLifeInsurancePolicy

gkos:PaymentsForInvestmentInCompanyOwnedLifeInsurancePolicy


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-03-31
Value794000.0423000.0723000.0439000.01072000.0-414000.0438000.0208000.0324000.0638000.0186000.0
Percentage of PaymentsForInvestmentInCompanyOwnedLifeInsurancePolicy100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gkos:ProceedsFromTenantAllowance

gkos:ProceedsFromTenantAllowance


Proceeds
Period End2021-06-302021-03-31
Value120.629
Percentage of ProceedsFromTenantAllowance100.0100.0

gkos:StockOptionPlanExpenses

gkos:StockOptionPlanExpenses


Stock
Period End2020-12-312020-09-302020-06-302020-03-31
Value00-1000.0-3171000.0
Percentage of StockOptionPlanExpenses0.00.0100.0100.0

gkos:UpfrontPaymentMade us-gaap:CounterpartyName, us-gaap:SubsequentEventType

gkos:UpfrontPaymentMade

gkos:LicensingAgreementWithIntratusInc, us-gaap:SubsequentEvent


Upfront
Period End2021-04-22
Value5000000.0
Percentage of UpfrontPaymentMade100.0

us-gaap:AmortizationOfDebtDiscountPremium us-gaap:DebtInstrument

us-gaap:AmortizationOfDebtDiscountPremium

gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue2027


Amortization
Period End2020-12-312020-09-30
Value2573000.02514000.0
Percentage of AmortizationOfDebtDiscountPremium100.0100.0

us-gaap:AmortizationOfFinancingCostsAndDiscounts

us-gaap:AmortizationOfFinancingCostsAndDiscounts


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.3440.3432.742.6770.576-0.019-0.04-0.077-0.109-0.112-0.09-0.07-0.077-0.058-0.035-0.0030.0310.027
Percentage of AmortizationOfFinancingCostsAndDiscounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfFinancingCostsAndDiscounts us-gaap:DebtInstrument

gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue2027


Amortization
Period End2021-06-302021-03-312020-12-312020-09-30
Value2.322.324.7164.654
Percentage of AmortizationOfFinancingCostsAndDiscounts674.4676.4172.1173.9

us-gaap:ConversionOfStockSharesConverted1 us-gaap:DebtInstrument

us-gaap:ConversionOfStockSharesConverted1

gkos:CappedCallTransactions


Conversion
Period End2021-06-302021-03-312020-06-30
Value05100000.05100000.0
Percentage of ConversionOfStockSharesConverted10.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-48000.0-450000.038000.0-669000.01108000.0-565000.0-244000.0-29000.026000.0-5000.0-32000.0-19000.0154000.0-55000.0-95000.0-84000.0-138000.0-117000.0664000.0-201000.0
Percentage of EffectOfExchangeRateOnCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


Finance
Period End2021-06-302021-03-31
Value202000.0251000.0
Percentage of FinanceLeasePrincipalPayments100.0100.0

us-gaap:ForeignCurrencyTransactionGainLossUnrealized

us-gaap:ForeignCurrencyTransactionGainLossUnrealized


Foreign
Period End2021-06-302021-03-312020-12-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value274000.0-1101000.01224000.0-2024000.0275000.0-600000.0300000.0-87000.0-106000.0-400000.0-1700000.0499000.03000.0300000.0300000.0342000.0-679000.082000.080000.0149000.0
Percentage of ForeignCurrencyTransactionGainLossUnrealized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GainLossOnSaleOfPropertyPlantEquipment


Gain
Period End2020-12-312020-09-302019-12-312019-09-302018-12-312018-09-302017-12-312017-09-30
Value-80000.0-272000.0-404000.0-19000.0-73000.0-5000.0-1000.00
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInAccountsPayableAndAccruedLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value123.0233.458-8.1396.748-4.750.8391.9513.123-5.1344.5274.1491.907-8.0566.9670.6294.461-2.3162.10.9682.844-0.8160.356-0.0251.0950.0922.4591.464
Percentage of IncreaseDecreaseInAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets

us-gaap:IncreaseDecreaseInOtherNoncurrentAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302014-12-312014-09-30
Value-146000.0-29000.0-69000.0-429000.0212000.0-1000.01691000.029000.0-5000.062000.0-1332000.0229000.0739000.0160000.0431000.0209000.0205000.0163000.0-101000.0-31000.07000.010000.0-771000.0656000.0
Percentage of IncreaseDecreaseInOtherNoncurrentAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndOtherIncome

us-gaap:InterestAndOtherIncome


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value342000.0383000.0498000.0595000.0590000.0696000.0801000.0780000.0800000.0788000.0684000.0583000.0505000.01016000.0434000.0658000.0598000.0636000.0-46000.0314000.0286000.0335000.072000.010000.0
Percentage of InterestAndOtherIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-114000.0-417000.0-38000.0-170000.01053000.0-480000.0-78000.074000.0289000.0372000.023000.074000.065000.0-210000.0-191000.09000.018000.040000.0-96000.0-175000.058000.0268000.0
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForRestructuring

us-gaap:PaymentsForRestructuring


Payments
Period End2020-12-312020-09-302020-06-302020-03-31
Value0800000.0500000.03600000.0
Percentage of PaymentsForRestructuring0.0100.0100.0100.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1747000.01065000.01279000.0594000.0501000.01512000.0599000.0654000.04246000.0102000.0262000.07000.0
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:PaymentsToAcquireMarketableSecurities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-03-31
Value43542721242181523241623221927222519261424350.3770.215
Percentage of PaymentsToAcquireMarketableSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans

us-gaap:ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-30
Value01549000.002747000.001278000.002486000.00902000.002121000.001388000.0001152000.00
Percentage of ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans0.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.0100.00.00.0100.00.0

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities

us-gaap:ProceedsFromSaleAndMaturityOfMarketableSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value53502633251918202416141722241726192513178.35415
Percentage of ProceedsFromSaleAndMaturityOfMarketableSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockOptionsExercised


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value6.272169.9383.6682.1364.4541.0594.8344.5644.6072.236113.1541.4520.4330.4840.8121.972.311.3351.9760.4380.0150.3551.1070.2570.0820.041
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ResearchAndDevelopmentInProcess

us-gaap:ResearchAndDevelopmentInProcess


Research
Period End2021-06-302019-12-312019-09-302019-06-302017-12-312017-09-302017-06-30
Value5000000.001500000.02245000.0005320000.0
Percentage of ResearchAndDevelopmentInProcess100.00.0100.0100.00.00.0100.0

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensationGross us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensationGross

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value481000.0741000.0277000.0459000.0589000.0279000.0305000.0226000.0829000.0311000.0208000.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensationGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensationGross

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensationGross


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value4.525175.8211.6344.226.6660.3195.406132.8362.839
Percentage of StockIssuedDuringPeriodValueShareBasedCompensationGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensationGross us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value4.525175.8211.6334.226.6660.3185.406132.8362.839
Percentage of StockIssuedDuringPeriodValueShareBasedCompensationGross100.0100.0100.099.9100.0100.099.7100.0100.0100.0100.0

gkos:AccruedContractPayments

gkos:AccruedContractPayments


Accrued
Period End2020-12-312019-12-312019-03-312018-12-312018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-06-302015-12-312015-09-302015-06-302014-12-31
Value2793000.01448000.01353000.01357000.01078000.0999000.01033000.01000000.01025000.0891000.0823000.0709000.0504000.0473000.02090000.02604000.0
Percentage of AccruedContractPayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gkos:AccruedEmployeeStockPurchasePlanCurrentLiabilities

gkos:AccruedEmployeeStockPurchasePlanCurrentLiabilities


Accrued
Period End2021-06-302020-12-312018-09-302017-12-31
Value3834000.01733000.0709000.01517000.0
Percentage of AccruedEmployeeStockPurchasePlanCurrentLiabilities100.0100.0100.0100.0

gkos:AccruedLiabilitiesAndEmployeeRelatedLiabilitiesCurrent

gkos:AccruedLiabilitiesAndEmployeeRelatedLiabilitiesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value63474539453851292521231916132016131013118.8086.9017.7936.7346.462
Percentage of AccruedLiabilitiesAndEmployeeRelatedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gkos:AccruedLiabilityForCashSettledOptionsCurrentLiabilities us-gaap:BalanceSheetLocation

gkos:AccruedLiabilityForCashSettledOptionsCurrentLiabilities

us-gaap:AccruedLiabilities


Accrued
Period End2020-12-312019-12-31
Value2200000.03100000.0
Percentage of AccruedLiabilityForCashSettledOptionsCurrentLiabilities100.0100.0

gkos:AccruedLiabilityForCashSettledOptionsCurrentLiabilities us-gaap:BusinessAcquisition

gkos:AvedroInc.


Accrued
Period End2020-09-302020-06-11
Value-2200000.02200000.0
Percentage of AccruedLiabilityForCashSettledOptionsCurrentLiabilities0.00.0

gkos:DeferredFinanceCostsNoncurrentGrossEquityPortion us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:DebtInstrument

gkos:DeferredFinanceCostsNoncurrentGrossEquityPortion

srt:CumulativeEffectPeriodOfAdoptionAdjustedBalance, gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue2027


Deferred
Period End2021-06-302021-03-31
Value8200000.08500000.0
Percentage of DeferredFinanceCostsNoncurrentGrossEquityPortion100.0100.0

gkos:DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpirationUnutilizedAmount us-gaap:IncomeTaxAuthority

gkos:DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpirationUnutilizedAmount

us-gaap:DomesticCountry


Deferred
Period End2020-12-31
Value10
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpirationUnutilizedAmount100.0

gkos:DeferredTaxAssetsTaxDeferredExpenseLeaseLiability

gkos:DeferredTaxAssetsTaxDeferredExpenseLeaseLiability


Deferred
Period End2020-12-312019-12-31
Value2018
Percentage of DeferredTaxAssetsTaxDeferredExpenseLeaseLiability100.0100.0

gkos:DeferredTaxLiabilitiesConvertibleNotes

gkos:DeferredTaxLiabilitiesConvertibleNotes


Deferred
Period End2020-12-31
Value22
Percentage of DeferredTaxLiabilitiesConvertibleNotes100.0

gkos:DeferredTaxLiabilitiesDeferredExpenseLeaseAssets

gkos:DeferredTaxLiabilitiesDeferredExpenseLeaseAssets


Deferred
Period End2020-12-312019-12-31
Value1717
Percentage of DeferredTaxLiabilitiesDeferredExpenseLeaseAssets100.0100.0

gkos:DepositAssetsAndOtherAssetsNoncurrent

gkos:DepositAssetsAndOtherAssetsNoncurrent


Deposit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value8240000.07591000.07207000.06545000.06531000.05237000.05649000.03527000.05022000.02965000.02262000.02327000.02102000.01448000.01200000.0767000.0559000.0354000.0188000.0188000.0156000.0150000.0149000.0141000.0253000.042000.0
Percentage of DepositAssetsAndOtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

gkos:FinanceAndOperatingLeaseLiability

gkos:FinanceAndOperatingLeaseLiability


Finance
Period End2020-12-312020-03-312019-12-31
Value827575
Percentage of FinanceAndOperatingLeaseLiability100.0100.0100.0

gkos:FinanceLeaseLiabilityPaymentsDueAfterYearSix

gkos:FinanceLeaseLiabilityPaymentsDueAfterYearSix


Finance
Period End2020-09-30
Value107
Percentage of FinanceLeaseLiabilityPaymentsDueAfterYearSix100.0

gkos:FinanceLeaseLiabilityPaymentsDueYearSix

gkos:FinanceLeaseLiabilityPaymentsDueYearSix


Finance
Period End2020-09-30
Value5500000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearSix100.0

gkos:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour

gkos:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour


Finite
Period End2020-09-30
Value139
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour100.0

gkos:IntangibleAssetsGrossIncludingGoodwill

gkos:IntangibleAssetsGrossIncludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value45145145145145145146917
Percentage of IntangibleAssetsGrossIncludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0

gkos:LeaseRightOfUseAsset

gkos:LeaseRightOfUseAsset


Lease
Period End2020-12-312020-03-312019-12-31
Value716869
Percentage of LeaseRightOfUseAsset100.0100.0100.0

gkos:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearSix

gkos:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearSix


Lessee
Period End2020-09-30
Value18
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearSix100.0

gkos:LesseeOperatingLeaseLiabilityPaymentsDueYearSix

gkos:LesseeOperatingLeaseLiabilityPaymentsDueYearSix


Lessee
Period End2020-09-30
Value2110000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearSix100.0

gkos:LesseeOperatingLeaseOptionToExtendValue

gkos:LesseeOperatingLeaseOptionToExtendValue


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value12121111
Percentage of LesseeOperatingLeaseOptionToExtendValue100.0100.0100.0100.0

gkos:NetOperatingLossCarryforwardPercentOfUtilizationForNoExpirationDate us-gaap:IncomeTaxAuthority

gkos:NetOperatingLossCarryforwardPercentOfUtilizationForNoExpirationDate

us-gaap:DomesticCountry


Net
Period End2020-12-31
Value80.0
Percentage of NetOperatingLossCarryforwardPercentOfUtilizationForNoExpirationDate100.0

gkos:NetWorkingCapital

gkos:NetWorkingCapital


Net
Period End2020-12-31
Value419
Percentage of NetWorkingCapital100.0

gkos:NumberOfPropertiesLeased us-gaap:CounterpartyName

gkos:NumberOfPropertiesLeased

gkos:AlisoViejoCaliforniaFacility


Number
Period End2020-11-14
Value1.0
Percentage of NumberOfPropertiesLeased100.0

gkos:NumberOfPropertiesLeased us-gaap:CounterpartyName, us-gaap:SubsequentEventType

gkos:DomesticOfficeLeases, us-gaap:SubsequentEvent


Number
Period End2020-07-31
Value2.0
Percentage of NumberOfPropertiesLeased0.0

gkos:OneTimePaymentMadeByCompany us-gaap:OtherCommitments

gkos:OneTimePaymentMadeByCompany

gkos:LicensingArrangementWithIntratusInc


One
Period End2021-04-22
Value5000000.0
Percentage of OneTimePaymentMadeByCompany100.0

gkos:OtherCommitmentObligationAmount

gkos:OtherCommitmentObligationAmount


Other
Period End2021-03-312020-12-312020-09-30
Value1300000.02500000.03800000.0
Percentage of OtherCommitmentObligationAmount100.0100.0100.0

gkos:PurchaseObligationDueAfterTwelveMonths

gkos:PurchaseObligationDueAfterTwelveMonths


Purchase
Period End2020-12-31
Value100000.0
Percentage of PurchaseObligationDueAfterTwelveMonths100.0

gkos:RestrictedCashPledgedForOfficeLeaseAgreement

gkos:RestrictedCashPledgedForOfficeLeaseAgreement


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-03-312019-12-31
Value600000.0600000.0600000.0400000.0400000.0400000.0
Percentage of RestrictedCashPledgedForOfficeLeaseAgreement100.0100.0100.0100.0100.0100.0

gkos:RestructuringHeadcountReductionNumber

gkos:RestructuringHeadcountReductionNumber


Restructuring
Period End2020-09-30
Value40.0
Percentage of RestructuringHeadcountReductionNumber100.0

gkos:TaxCreditCarryForwardSubjectToExpirationAmount us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward

gkos:TaxCreditCarryForwardSubjectToExpirationAmount

us-gaap:StateAndLocalJurisdiction, us-gaap:Research


Tax
Period End2020-12-312019-12-31
Value3.42.9
Percentage of TaxCreditCarryForwardSubjectToExpirationAmount100.0100.0

gkos:TaxCreditCarryForwardSubjectToExpirationUnutilizedAmount us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward

gkos:TaxCreditCarryForwardSubjectToExpirationUnutilizedAmount

us-gaap:DomesticCountry, us-gaap:Research


Tax
Period End2020-12-31
Value400000.0
Percentage of TaxCreditCarryForwardSubjectToExpirationUnutilizedAmount100.0

gkos:TaxCreditCarryforwardNotSubjectToExpirationAmount us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward

gkos:TaxCreditCarryforwardNotSubjectToExpirationAmount

us-gaap:StateAndLocalJurisdiction, us-gaap:Research


Tax
Period End2020-12-31
Value12
Percentage of TaxCreditCarryforwardNotSubjectToExpirationAmount100.0

us-gaap:AccountsReceivableGross

us-gaap:AccountsReceivableGross


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value3838373428303925222119201718171717141412119.6917.6327.066.5775.448
Percentage of AccountsReceivableGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableNet

us-gaap:AccountsReceivableNet


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value3736363226283824222018191717161616141411119.5697.5496.986.5025.398
Percentage of AccountsReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedBonusesCurrent

us-gaap:AccruedBonusesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value7.8334.669109.6557.324.149136.7145.4462.828.6045.9164.8943.1689.1064.5654.8632.2986.1224.7863.4811.413.7212.6051.9071.695
Percentage of AccruedBonusesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedPayrollTaxesCurrent

us-gaap:AccruedPayrollTaxesCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value137.5683.1983.4067.7651.133
Percentage of AccruedPayrollTaxesCurrent100.0100.0100.0100.0100.0100.0

us-gaap:AccruedSalesCommissionCurrent

us-gaap:AccruedSalesCommissionCurrent


Accrued
Period End2020-12-312019-12-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value3256000.01448000.0506000.02065000.0382000.0439000.01641000.0335000.0
Percentage of AccruedSalesCommissionCurrent100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedVacationCurrent

us-gaap:AccruedVacationCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-06-302014-12-31
Value4286000.04175000.03728000.03693000.03369000.03201000.02784000.02696000.02742000.02754000.02446000.02394000.02285000.02211000.02121000.02033000.01731000.01660000.01382000.01288000.01299000.01184000.01007000.0940000.0746000.0
Percentage of AccruedVacationCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AllowanceForDoubtfulAccountsReceivable


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value1171000.01467000.01700000.01400000.01800000.01600000.01200000.0740000.0748000.0744000.0660000.0622000.0537000.0649000.0592000.0620000.0494000.0321000.0495000.0262000.0150000.0122000.083000.080000.075000.050000.0
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure

us-gaap:AssetsFairValueDisclosure


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value3213171151151141131121121121001009991909489
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value7.9361893.9752.530.1142.0010.2221.156100.1480.3912.371.7270.4431.9530.08
Percentage of AssetsFairValueDisclosure2.559.63.42.20.11.80.21.09.50.10.42.41.90.52.10.1

us-gaap:FairValueInputsLevel2


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value314127111112114111112111102100999789909289
Percentage of AssetsFairValueDisclosure97.540.496.697.899.998.299.899.090.599.999.697.698.199.597.999.9

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value173.0895.1692.531.1562.370.080.1490.5725.08213
Percentage of AssetsFairValueDisclosure0.00.00.02.21.02.40.10.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value306320318112111978989837872
Percentage of AssetsFairValueDisclosure0.00.00.097.899.097.699.90.00.00.00.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:MoneyMarketFunds


Assets
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value173.0895.1692.531.156
Percentage of AssetsFairValueDisclosure0.00.00.02.21.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, gkos:MunicipalBondsSecurities


Assets
Period End2021-06-302021-03-312020-12-31
Value17179.972
Percentage of AssetsFairValueDisclosure0.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, gkos:SecuritiesHeldForDeferredCompensationPlans


Assets
Period End2021-06-302021-03-312020-12-312019-12-31
Value6.5485.7545.3313.511
Percentage of AssetsFairValueDisclosure0.00.00.03.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities


Assets
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value1313132521
Percentage of AssetsFairValueDisclosure0.00.00.022.119.4

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:BankTimeDeposits


Assets
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value1924251415
Percentage of AssetsFairValueDisclosure0.00.00.012.313.5

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CommercialPaper


Assets
Period End2020-12-312019-12-312018-12-31
Value1.57.4849.593
Percentage of AssetsFairValueDisclosure0.06.58.5

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities


Assets
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value6661556561
Percentage of AssetsFairValueDisclosure0.00.00.056.954.7

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:USGovernmentAgenciesDebtSecurities


Assets
Period End2021-06-302021-03-312020-12-312018-12-31
Value1731982061.982
Percentage of AssetsFairValueDisclosure0.00.00.01.8

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasurySecurities


Assets
Period End2021-06-302018-12-31
Value9.9791.297
Percentage of AssetsFairValueDisclosure0.01.1

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentType

us-gaap:FairValueInputsLevel1, us-gaap:MoneyMarketFunds


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value7.9361893.9752.530.1141.156
Percentage of AssetsFairValueDisclosure2.559.63.42.20.11.0

us-gaap:FairValueInputsLevel2, gkos:SecuritiesHeldForDeferredCompensationPlans


Assets
Period End2020-09-302019-12-31
Value4.6083.511
Percentage of AssetsFairValueDisclosure1.43.0

us-gaap:FairValueInputsLevel2, us-gaap:AssetBackedSecurities


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value172023252521
Percentage of AssetsFairValueDisclosure5.66.320.522.122.619.4

us-gaap:FairValueInputsLevel2, us-gaap:BankTimeDeposits


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value181613141115
Percentage of AssetsFairValueDisclosure5.95.312.012.310.213.5

us-gaap:FairValueInputsLevel2, us-gaap:CommercialPaper


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value3.08.4998.9617.4849.4549.593
Percentage of AssetsFairValueDisclosure0.92.77.86.58.28.5

us-gaap:FairValueInputsLevel2, us-gaap:CorporateDebtSecurities


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value636763656761
Percentage of AssetsFairValueDisclosure19.621.455.056.958.454.7

us-gaap:FairValueInputsLevel2, us-gaap:USGovernmentAgenciesDebtSecurities


Assets
Period End2020-09-302020-06-302020-03-312019-09-302018-12-31
Value206141.5030.51.982
Percentage of AssetsFairValueDisclosure64.14.61.30.41.8

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value324323323115112998989848386
Percentage of AssetsFairValueDisclosure0.00.00.0100.0100.0100.0100.00.00.00.00.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType

us-gaap:FairValueMeasurementsRecurring, gkos:MunicipalBondsSecurities


Assets
Period End2021-06-302021-03-312020-12-31
Value17179.972
Percentage of AssetsFairValueDisclosure0.00.00.0

us-gaap:FairValueMeasurementsRecurring, gkos:SecuritiesHeldForDeferredCompensationPlans


Assets
Period End2021-06-302021-03-312020-12-312019-12-31
Value6.5485.7545.3313.511
Percentage of AssetsFairValueDisclosure0.00.00.03.0

us-gaap:FairValueMeasurementsRecurring, us-gaap:AssetBackedSecurities


Assets
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value1313132521
Percentage of AssetsFairValueDisclosure0.00.00.022.119.4

us-gaap:FairValueMeasurementsRecurring, us-gaap:BankTimeDeposits


Assets
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value1924251415
Percentage of AssetsFairValueDisclosure0.00.00.012.313.5

us-gaap:FairValueMeasurementsRecurring, us-gaap:CommercialPaper


Assets
Period End2020-12-312019-12-312018-12-31
Value1.57.4849.593
Percentage of AssetsFairValueDisclosure0.06.58.5

us-gaap:FairValueMeasurementsRecurring, us-gaap:CorporateDebtSecurities


Assets
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value6661556561
Percentage of AssetsFairValueDisclosure0.00.00.056.954.7

us-gaap:FairValueMeasurementsRecurring, us-gaap:MoneyMarketFunds


Assets
Period End2021-06-302021-03-312020-12-312019-12-312018-12-31
Value173.0895.1692.531.156
Percentage of AssetsFairValueDisclosure0.00.00.02.21.0

us-gaap:FairValueMeasurementsRecurring, us-gaap:USGovernmentAgenciesDebtSecurities


Assets
Period End2021-06-302021-03-312020-12-312018-12-31
Value1731982061.982
Percentage of AssetsFairValueDisclosure0.00.00.01.8

us-gaap:FairValueMeasurementsRecurring, us-gaap:USTreasurySecurities


Assets
Period End2021-06-302018-12-31
Value9.9791.297
Percentage of AssetsFairValueDisclosure0.01.1

us-gaap:AssetsFairValueDisclosure us-gaap:InvestmentType

gkos:SecuritiesHeldForDeferredCompensationPlans


Assets
Period End2020-09-302019-12-31
Value4.6083.511
Percentage of AssetsFairValueDisclosure1.43.0

us-gaap:AssetBackedSecurities


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value172023252521
Percentage of AssetsFairValueDisclosure5.66.320.522.122.619.4

us-gaap:BankTimeDeposits


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value181613141115
Percentage of AssetsFairValueDisclosure5.95.312.012.310.213.5

us-gaap:CommercialPaper


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value3.08.4998.9617.4849.4549.593
Percentage of AssetsFairValueDisclosure0.92.77.86.58.28.5

us-gaap:CorporateDebtSecurities


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value636763656761
Percentage of AssetsFairValueDisclosure19.621.455.056.958.454.7

us-gaap:MoneyMarketFunds


Assets
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value7.9361893.9752.530.1141.156
Percentage of AssetsFairValueDisclosure2.559.63.42.20.11.0

us-gaap:USGovernmentAgenciesDebtSecurities


Assets
Period End2020-09-302020-06-302020-03-312019-09-302018-12-31
Value206141.5030.51.982
Percentage of AssetsFairValueDisclosure64.14.61.30.41.8

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


Available
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
Value351000.0482000.0765000.0847000.0980000.0314000.0409000.0479000.0447000.0210000.045000.026000.023000.02000.07000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

gkos:MunicipalBondsSecurities


Available
Period End2021-06-302021-03-312020-12-31
Value15000.08000.021000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax4.31.72.7

us-gaap:AssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-06-30
Value110000.0150000.0205000.0265000.0325000.087000.099000.0124000.0122000.060000.018000.01000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax31.331.126.831.333.227.724.225.927.328.640.04.3

us-gaap:BankTimeDeposits


Available
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
Value6000.05000.08000.025000.045000.021000.07000.012000.020000.015000.02000.06000.01000.01000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax1.71.01.03.04.66.71.72.54.57.14.423.14.314.3

us-gaap:CommercialPaperNotIncludedWithCashAndCashEquivalents


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3000.011000.05000.08000.012000.012000.06000.01000.01000.01000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.41.11.62.02.52.72.92.23.84.3

us-gaap:CorporateDebtSecurities


Available
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
Value152000.0198000.0308000.0417000.0597000.0198000.0295000.0331000.0293000.0129000.024000.019000.020000.02000.06000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax43.341.140.349.260.963.172.169.165.561.453.373.187.0100.085.7

us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value62000.0121000.0223000.0137000.02000.03000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax17.725.129.216.20.21.0

us-gaap:USTreasurySecurities


Available
Period End2021-06-30
Value6000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax1.7

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


Available
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
Value125000.0142000.07000.052000.015000.0401000.017000.010000.026000.0104000.0311000.0315000.0385000.0430000.0224000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FinancialInstrument

gkos:MunicipalBondsSecurities


Available
Period End2021-06-302021-03-312020-12-31
Value33000.029000.03000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax26.420.442.9

us-gaap:AssetBackedSecurities


Available
Period End2021-03-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1000.029000.07000.08000.012000.048000.094000.0124000.0132000.0133000.061000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.77.241.280.046.246.230.239.434.330.927.2

us-gaap:BankTimeDeposits


Available
Period End2021-06-302021-03-312020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value3000.06000.01000.011000.03000.02000.07000.08000.03000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax2.44.26.72.71.00.61.81.91.3

us-gaap:CorporateDebtSecurities


Available
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
Value35000.074000.01000.01000.010000.0345000.010000.02000.011000.048000.0194000.0162000.0209000.0243000.0121000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax28.052.114.31.966.786.058.820.042.346.262.451.454.356.554.0

us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value54000.032000.03000.051000.04000.02000.07000.012000.017000.022000.024000.017000.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax43.222.542.998.126.77.76.73.95.45.75.67.6

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


Available
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
Value300310307306127110111112109111110100959894
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument

gkos:MunicipalBondsSecurities


Available
Period End2021-06-302021-03-312020-12-31
Value17179.954
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis5.95.53.2

us-gaap:AssetBackedSecurities


Available
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
Value131213171923252525272118211816
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis4.54.24.35.715.621.422.822.823.624.419.818.822.518.517.7

us-gaap:BankTimeDeposits


Available
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
Value19202016161212109.01515148.7021110
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis6.66.76.75.513.311.311.79.38.213.513.714.69.112.010.9

us-gaap:CommercialPaperNotIncludedWithCashAndCashEquivalents


Available
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.52.9978.4888.9737.4759.4428.423119.5978.611121611
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.51.06.78.16.78.47.710.68.78.513.316.412.2

us-gaap:CorporateDebtSecurities


Available
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
Value656154626763656664556053474651
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis22.019.817.920.553.057.858.859.158.849.554.952.649.347.054.4

us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value173198206206141.50.51.9991.9961.9943.9913.9884.1852.698
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis57.763.867.367.311.41.40.41.81.81.84.04.24.22.8

us-gaap:USTreasurySecurities


Available
Period End2021-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value9.9730.31.31.5991.5991.7991.799
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis3.30.31.21.61.71.81.9

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecurities


Available
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
Value300310307307127110111113110111110100959894
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities us-gaap:FinancialInstrument

gkos:MunicipalBondsSecurities


Available
Period End2021-06-302021-03-312020-12-31
Value17179.972
Percentage of AvailableForSaleSecuritiesDebtSecurities5.95.53.2

us-gaap:AssetBackedSecurities


Available
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
Value131313172023252526272118211816
Percentage of AvailableForSaleSecuritiesDebtSecurities4.64.24.45.815.721.522.822.823.624.319.718.722.418.517.7

us-gaap:BankTimeDeposits


Available
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
Value19202016161213109.021515148.6961110
Percentage of AvailableForSaleSecuritiesDebtSecurities6.66.76.75.513.211.311.79.38.213.513.714.69.112.010.9

us-gaap:CommercialPaperNotIncludedWithCashAndCashEquivalents


Available
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1.53.08.4998.9627.4839.4548.434119.5938.61121611
Percentage of AvailableForSaleSecuritiesDebtSecurities0.51.06.68.16.78.37.610.68.78.613.316.512.3

us-gaap:CorporateDebtSecurities


Available
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
Value666155636763656764556052464651
Percentage of AvailableForSaleSecuritiesDebtSecurities22.019.817.920.653.157.758.859.158.849.654.952.649.347.054.4

us-gaap:USGovernmentAgenciesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value173198206206141.5030.51.9971.9891.9823.9743.9664.1612.681
Percentage of AvailableForSaleSecuritiesDebtSecurities57.663.867.267.111.31.40.41.81.81.84.04.24.22.8

us-gaap:USTreasurySecurities


Available
Period End2021-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value9.9790.31.2971.5911.5861.7831.782
Percentage of AvailableForSaleSecuritiesDebtSecurities3.30.31.21.61.71.81.9

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType

us-gaap:CashAndCashEquivalentsFairValueDisclosure

us-gaap:FairValueMeasurementsRecurring, us-gaap:BankTimeDeposits


Cash
Period End2020-12-312019-12-31
Value5000000.01201000.0
Percentage of CashAndCashEquivalentsFairValueDisclosure100.0100.0

us-gaap:CashAndCashEquivalentsFairValueDisclosure us-gaap:InvestmentType

us-gaap:BankTimeDeposits


Cash
Period End2021-03-312020-12-312020-09-302020-03-312019-12-312019-09-30
Value4000000.05000000.02000000.01500000.01201000.01201000.0
Percentage of CashAndCashEquivalentsFairValueDisclosure0.0100.00.00.0100.00.0

us-gaap:CashCashEquivalentsAndShortTermInvestments

us-gaap:CashCashEquivalentsAndShortTermInvestments


Cash
Period End2020-12-31
Value413
Percentage of CashCashEquivalentsAndShortTermInvestments100.0

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance us-gaap:PlanName

us-gaap:CommonStockCapitalSharesReservedForFutureIssuance

gkos:EmployeeStockPurchasePlan2015


Common
Period End2021-01-012019-01-012017-01-012015-09-302015-06-30
Value2.71.81.10.450.45
Percentage of CommonStockCapitalSharesReservedForFutureIssuance100.0100.0100.0100.0100.0

gkos:StockBasedCompensationPlan2015


Common
Period End2021-01-012019-01-012017-01-012015-09-302015-06-30
Value15117.84.54.5
Percentage of CommonStockCapitalSharesReservedForFutureIssuance585.2627.8709.11000.01000.0

us-gaap:ConvertibleDebtCurrent

us-gaap:ConvertibleDebtCurrent


Convertible
Period End2021-06-302021-03-31
Value279278
Percentage of ConvertibleDebtCurrent100.0100.0

us-gaap:ConvertibleDebtCurrent us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements

srt:CumulativeEffectPeriodOfAdoptionAdjustment, gkos:AccountingStandardsUpdate202006


Convertible
Period End2021-01-01
Value89
Percentage of ConvertibleDebtCurrent0.0

us-gaap:ConvertibleLongTermNotesPayable

us-gaap:ConvertibleLongTermNotesPayable


Convertible
Period End2020-12-312020-09-302020-06-30
Value189186183
Percentage of ConvertibleLongTermNotesPayable100.0100.0100.0

us-gaap:ConvertibleLongTermNotesPayable us-gaap:DebtInstrument

gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue2027


Convertible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value279278189186183
Percentage of ConvertibleLongTermNotesPayable0.00.0100.0100.0100.0

us-gaap:DebtInstrumentInterestRateEffectivePercentage us-gaap:DebtInstrument

us-gaap:DebtInstrumentInterestRateEffectivePercentage

gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue2027


Debt
Period End2021-06-302021-03-312020-12-312020-09-30
Value3.233.239.59.5
Percentage of DebtInstrumentInterestRateEffectivePercentage100.0100.0100.0100.0

us-gaap:DebtInstrumentUnamortizedDiscount us-gaap:DebtInstrument

us-gaap:DebtInstrumentUnamortizedDiscount

gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue2027


Debt
Period End2020-12-312020-09-30
Value9294
Percentage of DebtInstrumentUnamortizedDiscount100.0100.0

us-gaap:DeferredCompensationLiabilityClassifiedNoncurrent

us-gaap:DeferredCompensationLiabilityClassifiedNoncurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-06-302016-12-31
Value6600000.05700000.05200000.04500000.04100000.03200000.03700000.03200000.03000000.02600000.02000000.01900000.01700000.0600000.0200000.00
Percentage of DeferredCompensationLiabilityClassifiedNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredCompensationPlanAssets

us-gaap:DeferredCompensationPlanAssets


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-06-302016-12-31
Value6500000.05800000.05300000.04600000.04200000.03100000.03500000.03100000.02900000.02500000.01900000.02000000.01700000.0700000.0200000.00
Percentage of DeferredCompensationPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DeferredFinanceCostsCurrentGross us-gaap:CumulativeEffectPeriodOfAdoption, us-gaap:AdjustmentsForNewAccountingPronouncements, us-gaap:DebtInstrument

us-gaap:DeferredFinanceCostsCurrentGross

srt:CumulativeEffectPeriodOfAdoptionAdjustedBalance, gkos:AccountingStandardsUpdate202006, gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue2027


Deferred
Period End2021-06-302021-03-31
Value8200000.08500000.0
Percentage of DeferredFinanceCostsCurrentGross100.0100.0

us-gaap:DeferredFinanceCostsCurrentGross us-gaap:DebtInstrument

gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue2027


Deferred
Period End2021-06-302021-03-31
Value8160000.08504000.0
Percentage of DeferredFinanceCostsCurrentGross99.5100.0

us-gaap:DeferredFinanceCostsNoncurrentGross us-gaap:DebtInstrument

us-gaap:DeferredFinanceCostsNoncurrentGross

gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue2027


Deferred
Period End2020-12-312020-09-302020-06-30
Value981009.6
Percentage of DeferredFinanceCostsNoncurrentGross100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-31
Value116104
Percentage of DeferredIncomeTaxLiabilities100.0100.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value1511267265727566
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value87694037414547
Percentage of DeferredTaxAssetsOperatingLossCarryforwards100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration us-gaap:IncomeTaxAuthority

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration

us-gaap:DomesticCountry


Deferred
Period End2020-12-31
Value186
Percentage of DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration100.0

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value14117.7546.7134.9133.9733.306
Percentage of DeferredTaxAssetsTaxCreditCarryforwards100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value19199.8387.1845.313.7491.439
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value9013000.07996000.05030000.03739000.03920000.02241000.0528000.0
Percentage of DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts


Deferred
Period End2020-12-312019-12-31
Value59000.06030000.0
Percentage of DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts100.0100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312018-12-312017-12-31
Value542000.065000.042000.0
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-31
Value7681
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions


Employee
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
Value635046546249655459524849
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions us-gaap:AwardType

gkos:EmployeeAndNonemployeeStockOption


Employee
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
Value101317222726362831353543
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions16.026.736.741.643.753.056.253.152.067.773.388.7

gkos:ReplacementAwards


Employee
Period End2021-06-30
Value2.3
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions3.6

us-gaap:RestrictedStockUnitsRSU


Employee
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
Value53372932352328252817125.6
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions84.073.363.358.456.347.043.846.948.032.326.711.3

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiability


Finance
Period End2021-06-302021-03-312020-12-312020-09-302019-09-302019-06-30
Value726160606968
Percentage of FinanceLeaseLiability100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseLiabilityNoncurrent


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value726160606059586868
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDue


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value135125125126
Percentage of FinanceLeaseLiabilityPaymentsDue100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueAfterYearFive


Finance
Period End2021-06-302021-03-312020-12-31
Value107107113
Percentage of FinanceLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value5500000.05500000.05340000.05340000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearFive100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour

us-gaap:FinanceLeaseLiabilityPaymentsDueYearFour


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value5340000.05340000.05184000.05184000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree

us-gaap:FinanceLeaseLiabilityPaymentsDueYearThree


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value5184000.05184000.01996000.03156000.0
Percentage of FinanceLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo


Finance
Period End2021-06-302021-03-31
Value121.465
Percentage of FinanceLeaseLiabilityPaymentsDueYearTwo100.0100.0

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount

us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount


Finance
Period End2021-06-302021-03-312020-12-312020-09-30
Value62636466
Percentage of FinanceLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FinanceLeaseRightOfUseAsset


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value505051515253545353
Percentage of FinanceLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value39332721158.82320171716151413121211109.3518.4387.5254.025
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:CustomerRelationships


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value4.5243.8193.1142.4091.7040.9990.294
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization11.311.311.311.311.311.31.4

us-gaap:DevelopedTechnologyRights


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value35292418137.8242.301
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization88.788.788.788.788.788.711.3

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive


Finite
Period End2021-06-302021-03-312020-12-31
Value117117117
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear


Finite
Period End2021-06-302021-03-312020-09-30
Value12186.228
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive


Finite
Period End2020-12-31
Value22
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFive100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value22222424
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearFour100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree


Finite
Period End2021-06-302021-03-312020-12-312020-09-30
Value24242424
Percentage of FiniteLivedIntangibleAssetsAmortizationExpenseYearThree100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:FiniteLivedIntangibleAssetsGross


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value2662662662662662662841717171718181818171717171717
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPayableCurrent

us-gaap:InterestPayableCurrent


Interest
Period End2020-09-30
Value2394000.0
Percentage of InterestPayableCurrent100.0

us-gaap:InventoryGross

us-gaap:InventoryGross


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value1715151921274212141313131312118.9668.3827.4856.8446.4535.5115.0614.0973.1532.9082.258
Percentage of InventoryGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryRawMaterials

us-gaap:InventoryRawMaterials


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value6411000.04848000.06879000.09269000.09289000.06861000.06586000.04137000.03984000.04775000.05829000.06316000.06909000.05875000.04629000.02989000.02679000.03244000.02725000.03353000.03109000.02894000.02641000.01742000.01678000.01102000.0
Percentage of InventoryRawMaterials100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InventoryWorkInProcess

us-gaap:InventoryWorkInProcess


Inventory
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value5246000.03761000.03584000.04316000.03471000.02730000.03884000.04404000.03999000.03668000.03197000.03544000.03094000.03391000.02368000.02459000.02656000.01890000.02105000.0358000.0419000.0350000.0503000.0174000.0153000.0194000.0
Percentage of InventoryWorkInProcess100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value3158000.02953000.02788000.02700000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths100.0100.0100.0100.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear


Lessee
Period End2021-06-302021-03-312020-09-30
Value1260000.02001000.0577000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure

us-gaap:LiabilitiesFairValueDisclosure


Liabilities
Period End2020-09-302020-03-312019-12-31
Value4530000.02165000.06685000.0
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel2


Liabilities
Period End2020-09-302020-03-312019-12-31
Value4530000.02165000.06685000.0
Percentage of LiabilitiesFairValueDisclosure100.0100.0100.0

us-gaap:LiabilitiesFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Liabilities
Period End2021-06-302021-03-312020-12-312019-12-31
Value6555000.05689000.05232000.06685000.0
Percentage of LiabilitiesFairValueDisclosure0.00.00.0100.0

us-gaap:LiabilitiesFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, gkos:SecuritiesHeldForDeferredCompensationPlans


Liabilities
Period End2021-06-302021-03-312020-12-312019-12-31
Value6555000.05689000.05232000.03669000.0
Percentage of LiabilitiesFairValueDisclosure0.00.00.054.9

us-gaap:LiabilitiesFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentType

us-gaap:FairValueInputsLevel2, gkos:SecuritiesHeldForDeferredCompensationPlans


Liabilities
Period End2020-09-302019-12-31
Value4530000.03669000.0
Percentage of LiabilitiesFairValueDisclosure100.054.9

us-gaap:LiabilitiesFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Liabilities
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312015-12-312015-09-302015-06-302014-12-31
Value6555000.05689000.05232000.06685000.00000000000105000.0103000.0273000.0379000.0
Percentage of LiabilitiesFairValueDisclosure0.00.00.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LiabilitiesFairValueDisclosure us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentType

us-gaap:FairValueMeasurementsRecurring, gkos:SecuritiesHeldForDeferredCompensationPlans


Liabilities
Period End2021-06-302021-03-312020-12-312019-12-31
Value6555000.05689000.05232000.03669000.0
Percentage of LiabilitiesFairValueDisclosure0.00.00.054.9

us-gaap:LiabilitiesFairValueDisclosure us-gaap:InvestmentType

gkos:SecuritiesHeldForDeferredCompensationPlans


Liabilities
Period End2020-09-302019-12-31
Value4530000.03669000.0
Percentage of LiabilitiesFairValueDisclosure100.054.9

us-gaap:NotesPayableFairValueDisclosure us-gaap:DebtInstrument

us-gaap:NotesPayableFairValueDisclosure

gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue2027


Notes
Period End2021-06-302021-03-312020-12-312020-09-30
Value490488442331
Percentage of NotesPayableFairValueDisclosure100.0100.0100.0100.0

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent


Operating
Period End2020-12-312019-12-31
Value7.75.5
Percentage of OperatingLeaseWeightedAverageDiscountRatePercent100.0100.0

us-gaap:OperatingLossCarryforwards us-gaap:IncomeTaxAuthority

us-gaap:OperatingLossCarryforwards

us-gaap:DomesticCountry


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value439355154125136118
Percentage of OperatingLossCarryforwards100.0100.0100.0100.0100.0100.0

us-gaap:ForeignCountry


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value131315187.52.3
Percentage of OperatingLossCarryforwards3.03.710.214.35.51.9

us-gaap:StateAndLocalJurisdiction


Operating
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value2971441209410498
Percentage of OperatingLossCarryforwards67.740.578.174.976.183.1

us-gaap:RestrictedCash

us-gaap:RestrictedCash


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value9416000.09416000.09566000.09326000.09326000.09326000.09326000.08900000.08800000.08800000.08800000.0
Percentage of RestrictedCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedCashAndCashEquivalentsNoncurrent

us-gaap:RestrictedCashAndCashEquivalentsNoncurrent


Restricted
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value9416000.09416000.09566000.09326000.09326000.09326000.09326000.08881000.08848000.08775000.0
Percentage of RestrictedCashAndCashEquivalentsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringAndRelatedCostExpectedCost1

us-gaap:RestructuringAndRelatedCostExpectedCost1


Restructuring
Period End2020-12-312020-09-30
Value5000000.05300000.0
Percentage of RestructuringAndRelatedCostExpectedCost1100.0100.0

us-gaap:RestructuringReserve

us-gaap:RestructuringReserve


Restructuring
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value100000.0306000.0800000.0900000.04096000.0
Percentage of RestructuringReserve100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber

us-gaap:RestrictedStockUnitsRSU


Share
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value988000.0695000.0606000.0642000.0653000.0532000.0523000.0396000.0192000.0173000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:RestrictedStockUnitsRSU


Share
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value40.8254.452.3951.4541.2735.1735.0233.3937.6939.1
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber

gkos:AggregateStockBasedCompensationPlans


Share
Period End2020-12-312019-12-312017-12-312016-12-312015-12-31
Value4780000.04985000.03687000.02977000.03782000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

gkos:AggregateStockBasedCompensationPlans


Share
Period End2020-12-312019-12-31
Value24.5919.71
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

gkos:AggregateStockBasedCompensationPlans


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value28520420469129102169.299
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue

gkos:AggregateStockBasedCompensationPlans


Share
Period End2020-12-31
Value242
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue

gkos:AggregateStockBasedCompensationPlans


Share
Period End2020-12-312019-12-31
Value273197
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber

gkos:AggregateStockBasedCompensationPlans


Share
Period End2020-12-31
Value5678000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice us-gaap:PlanName

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice

gkos:AggregateStockBasedCompensationPlans


Share
Period End2020-12-31
Value27.06
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice100.0

us-gaap:TaxCreditCarryforwardAmount us-gaap:IncomeTaxAuthority, us-gaap:TaxCreditCarryforward

us-gaap:TaxCreditCarryforwardAmount

us-gaap:DomesticCountry, us-gaap:Research


Tax
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value32289.17.55.94.6
Percentage of TaxCreditCarryforwardAmount100.0100.0100.0100.0100.0100.0

us-gaap:StateAndLocalJurisdiction, us-gaap:Research


Tax
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value15128.17.06.05.1
Percentage of TaxCreditCarryforwardAmount48.644.389.093.3101.7110.9

us-gaap:UnamortizedDebtIssuanceExpense us-gaap:DebtInstrument

us-gaap:UnamortizedDebtIssuanceExpense

gkos:TwoPointSevenFivePercentConvertibleSeniorNotesDue2027


Unamortized
Period End2020-12-312020-09-302020-06-30
Value6000000.06100000.06300000.0
Percentage of UnamortizedDebtIssuanceExpense100.0100.0100.0

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate


Unrecognized
Period End2020-12-31
Value500000.0
Percentage of UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate100.0

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
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:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:StatementGeographical
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Statement Geographical
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Product Or Service
us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
(None,)
Property Plant And Equipment Grossus-gaap: Property Plant And Equipment By Type
us-gaap:PropertyPlantAndEquipmentNet
us-gaap:StatementGeographical
(None,)
Property Plant And Equipment Netus-gaap: Statement Geographical
us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
(None,)
Finite Lived Intangible Assets Netus-gaap: Finite Lived Intangible Assets By Major Class
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents
(None,)
Stockholders Equity Including Portion Attributable To Noncontrolling Interestus-gaap: Statement Equity Components