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v3.23.3

Commitments and Contingencies - Other (Details) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2023 USD ($) item | Dec. 31, 2022 USD ($) item
Commitments and Contingencies |  |
Restricted cash pledged for letter of credit | $ 5.6 | $ 6.8
Number of Months from start of lease for adjustments to Letter of Credit | item | 37 |
Adjustment rate of Letter of Credit (as a percent) | 20.00% |
Amount of Letter of Credit outstanding after adjustments | $ 2.0 |
Number of other irrevocable letters of credit outstanding | item | 1 | 1
Restricted cash pledged for office lease agreement | $ 0.2 | $ 0.2
Deferred compensation plan liability | 10.3 | 8.2
Deferred Compensation Plan Assets | $ 10.4 | $ 8.4

X
- Definition Represents the adjustment percentage to the letters of credit balance outstanding. + References No definition available. + Details
Name: | gkos_AdjustmentPercentageOfLettersOfCreditBalanceOutstanding
Namespace Prefix: | gkos_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the minimal amount of letters of credit balance outstanding after all adjustments. + References No definition available. + Details
Name: | gkos_MinimalAmountOfLettersOfCreditBalanceOutstandingAfterAdjustments
Namespace Prefix: | gkos_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the number of months from the start of the lease for adjustments to the letters of credit balance outstanding to begin. + References No definition available. + Details
Name: | gkos_NumberOfMonthsOfLeaseTermForAdjustmentsOfLettersOfCreditBalanceOutstandingToBegin
Namespace Prefix: | gkos_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the number of other irrevocable letters of credit outstanding. + References No definition available. + Details
Name: | gkos_NumberOfOtherIrrevocableLettersOfCreditOutstanding
Namespace Prefix: | gkos_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the amount of restricted cash pledged for letter of credit. + References No definition available. + Details
Name: | gkos_RestrictedCashPledgedForLetterOfCredit
Namespace Prefix: | gkos_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the amount of restricted cash pledged for office lease agreement. + References No definition available. + Details
Name: | gkos_RestrictedCashPledgedForOfficeLeaseAgreement
Namespace Prefix: | gkos_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer). + References No definition available. + Details
Name: | us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount as of the balance sheet date of assets held under deferred compensation agreements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_DeferredCompensationPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant