XML 84 R70.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Royalty Purchase and Sale Agreement - Summarizes the Activity of the HCR Agreement (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Royalty Purchase And Sale Agreement [Line Items] |  |
Royalty purchase and sale agreement balance at December 31, 2023 | $ 37,079 |
Non-cash interest expense | 8,473 | $ 604
Receivable for additional HCR financing earned | 2,500 |
Balance at December 31, 2024 | 44,448 | 37,079
HCR Agreement [Member] |  |
Royalty Purchase And Sale Agreement [Line Items] |  |
Royalty purchase and sale agreement balance at December 31, 2023 | 37,079 |
Payments | (3,604) | 0
Non-cash interest expense | 8,473 |
Receivable for additional HCR financing earned | 2,500 |
Balance at December 31, 2024 | $ 44,448 | $ 37,079
Effective interest rate | 27.82% |

X
- Definition Represents the effective interest rate of HCR agreement. + References No definition available. + Details
Name: | cara_CollaborationAndLicensingAgreementEffectiveInterestRate
Namespace Prefix: | cara_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of non-cash interest expense on liability related to sales of future royalties and milestones. + References No definition available. + Details
Name: | cara_NonCashInterestExpenseOnLiabilityRelatedToSalesOfFutureRoyaltiesAndMilestones
Namespace Prefix: | cara_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Reflects the amount earned related to the additional milestone receivable under royalty purchase and sale agreement. + References No definition available. + Details
Name: | cara_RoyaltyPurchaseAndSaleAgreementAdditionalMilestoneReceivablesEarned
Namespace Prefix: | cara_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items representing royalty purchase and sale agreement. + References No definition available. + Details
Name: | cara_RoyaltyPurchaseAndSaleAgreementLineItems
Namespace Prefix: | cara_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of payments of royalty purchase and sale. + References No definition available. + Details
Name: | cara_RoyaltyPurchaseAndSaleAgreementPayments
Namespace Prefix: | cara_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount the entity has committed to make for future royalty guarantees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 928 -SubTopic 440 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477866/928-440-50-1 + Details
Name: | us-gaap_RoyaltyGuaranteesCommitmentsAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=cara_HcrAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |