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Leases - Additional Information (Details) | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($)
Leases [Abstract] |
Lease expires date | Feb. 28, 2027
Monthly rent payments | $ 65,000
Annual rent increase, percentage | 3.00%

X
- Definition Lessee operating lease annual rent increase percentage. + References No definition available. + Details
Name: | crdf_LesseeOperatingLeaseAnnualRentIncreasePercentage
Namespace Prefix: | crdf_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Lessee operating lease monthly rent payment. + References No definition available. + Details
Name: | crdf_LesseeOperatingLeaseMonthlyRentPayment
Namespace Prefix: | crdf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Date which lease or group of leases is set to expire, in YYYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_LeaseExpirationDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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