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CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) $ in Millions | 12 Months Ended
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Dec. 31, 2023 USD ($)
CONSOLIDATED STATEMENTS OF CASH FLOWS |
Approximate issuance costs related to royalty purchase and sale agreement | $ 1.0

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

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