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v3.25.2

Commitments and Contingencies - Other (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024
Commitments and Contingencies. |  |
Restricted cash pledged for letter of credit | $ 3.8 | $ 4.7
Adjustment rate of Letter of Credit (as a percent) | 20.00% |
Amount of Letter of Credit outstanding after adjustments | $ 2.0 |
Deferred compensation plan |  |
Deferred compensation plan liability | 17.3 | 14.6
Deferred compensation plan assets | $ 17.2 | $ 14.7

X
- Definition Represents the adjustment percentage to the letters of credit balance outstanding. + References No definition available. + Details
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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
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Namespace Prefix: | gkos_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- 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
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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