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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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