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Liability Related to the Sale of Future Royalties - Schedule of Liability Related to the Sale of Future Royalties (Details) $ in Thousands | 6 Months Ended
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Jun. 30, 2025 USD ($)
Nonmonetary Transaction [Roll Forward] |
Carrying value of liability related to the sale of future royalties at beginning balance | $ 34,174
Imputed interest expense | 956
Other | 31
Less: payments to the Purchasers | (5,004)
Carrying value of liability related to the sale of future royalties at ending balance | 30,157
Less current portion | 7,353
Carrying value of liability related to the sale of future royalties at June 30, 2025, net of current portion | $ 22,804

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- Definition Current Portion Of Future Royalty Liability + References No definition available. + Details
Name: | cris_CurrentPortionOfFutureRoyaltyLiability
Namespace Prefix: | cris_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Nonmonetary Transaction + References No definition available. + Details
Name: | cris_NonmonetaryTransactionRollForward
Namespace Prefix: | cris_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Payments Of Future Royalty Liability + References No definition available. + Details
Name: | cris_PaymentsOfFutureRoyaltyLiability
Namespace Prefix: | cris_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Royalty Purchase Agreement, Accretion Expense + References No definition available. + Details
Name: | cris_RoyaltyPurchaseAgreementAccretionExpense
Namespace Prefix: | cris_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Royalty Purchase Agreement, Issuance Costs Capitalized, Amortization + References No definition available. + Details
Name: | cris_RoyaltyPurchaseAgreementIssuanceCostsCapitalizedAmortization
Namespace Prefix: | cris_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Royalty Purchase Agreement, Liability, Carrying Value + References No definition available. + Details
Name: | cris_RoyaltyPurchaseAgreementLiabilityCarryingValue
Namespace Prefix: | cris_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Royalty Purchase Agreement, Liability, Net Of Current Portion + References No definition available. + Details
Name: | cris_RoyaltyPurchaseAgreementLiabilityNetOfCurrentPortion
Namespace Prefix: | cris_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant