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v3.23.1

Commitments and Contingencies (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract] |  |
Milestone and royalty payments made | $ 0 | $ 0

X
- Definition Collaborative Arrangement, Rights and Obligations, Milestone And Royalty Payments Made + References No definition available. + Details
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Namespace Prefix: | crdf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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