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v3.24.3

Deferred Royalty Obligations -Narrative (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 USD ($) | Sep. 30, 2024 USD ($)
Deferred Royalty Obligation |  |
Initial effective interest rate | 15.20% | 15.20%
Interest expense on deferred royalty obligation | $ 1,526 | $ 1,526
Net sales prior to July 1, 2025 |  |
Deferred Royalty Obligation |  |
Royalty rate | 7.40% | 7.40%
Net sales after July 1, 2025 and up to March, 2032. |  |
Deferred Royalty Obligation |  |
Royalty rate | 9.70% | 9.70%

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- Definition Line items represent information about deferred royalty liability. + References No definition available. + Details
Name: | coll_DeferredRoyaltyLiabilityLineItems
Namespace Prefix: | coll_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Effective interest rate for the deferred royalty obligations. + References No definition available. + Details
Name: | coll_DeferredRoyaltyObligationInterestRateEffectivePercentage
Namespace Prefix: | coll_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Amount of interest expense recognized during the period towards deferred royalty liability obligation. + References No definition available. + Details
Name: | coll_InterestExpenseOnDeferredRoyaltyLiability
Namespace Prefix: | coll_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Percentage of royalty amount agreed to be paid upon net sales. + References No definition available. + Details
Name: | coll_RoyaltyRatePercent
Namespace Prefix: | coll_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | srt_StatementScenarioAxis=coll_NetSalesPriorToJuly12025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_StatementScenarioAxis=coll_NetSalesPriorAfterJuly12025AndUpToMarch2032Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |