Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Schedule Of Unfunded Commitments On Existing Loans [Abstract]
Unfunded commitments	$ 16.6	$ 20.9

Schedule Of Unfunded Commitments On Existing Loans Abstract

No definition available.

Name:	refi_ScheduleOfUnfundedCommitmentsOnExistingLoansAbstract
Namespace Prefix:	refi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration