Loans Held For Investment, Net - Schedule of Changes in Loans Held at Carrying Value (Details) - USD ($)	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Schedule of Changes in Loans Held at Carrying Value [Line Items]
Principal, Beginning	$ 398,130,177	$ 348,667,963
Purchase of investments	77,349,538	159,452,571
Principal repayment of loans	(79,221,108)	(102,461,111)
Accretion of original issue discount	2,187,528	1,697,139
Transfer of loan held for investment to loan held for sale		(18,786,087)
Capitalized PIK Interest	6,162,563	9,147,837
Increase in provision for current expected credit losses	(715,916)	411,865
Principal, Ending	403,892,782	398,130,177
Principal [Member]
Schedule of Changes in Loans Held at Carrying Value [Line Items]
Principal, Beginning	404,721,554	355,745,305
Purchase of investments	79,412,079	161,289,523
Principal repayment of loans	(79,221,108)	(102,461,111)
Accretion of original issue discount	0	0
Transfer of loan held for investment to loan held for sale		(19,000,000)
Capitalized PIK Interest	6,162,563	9,147,837
Increase in provision for current expected credit losses	0	0
Principal, Ending	411,075,088	404,721,554
Original Issue Discount [Member]
Schedule of Changes in Loans Held at Carrying Value [Line Items]
Principal, Beginning	(2,244,508)	(2,104,695)
Purchase of investments	(2,062,541)	(1,836,952)
Principal repayment of loans	0	0
Accretion of original issue discount	2,187,528	1,697,139
Capitalized PIK Interest	0	0
Increase in provision for current expected credit losses	0	0
Principal, Ending	(2,119,521)	(2,244,508)
Current expected credit loss reserve [Member]
Schedule of Changes in Loans Held at Carrying Value [Line Items]
Principal, Beginning	(4,346,869)	(4,972,647)
Purchase of investments	0	0
Principal repayment of loans	0	0
Accretion of original issue discount	0	0
Transfer of loan held for investment to loan held for sale		213,913
Capitalized PIK Interest	0	0
Increase in provision for current expected credit losses	(715,916)	411,865
Principal, Ending	$ (5,062,785)	$ (4,346,869)

Loan held at carrying value balance.

No definition available.

Name:	refi_LoanHeldAtCarryingValueBalance
Namespace Prefix:	refi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Issuance of and fundings of loans held for investment.

+ References

No definition available.

+ Details

Name:	refi_NewFundings
Namespace Prefix:	refi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Principal repayment of loans and principal receivables.

+ References

No definition available.

+ Details

Name:	refi_PrincipalRepaymentOfLoansAndPrincipalReceivables
Namespace Prefix:	refi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Schedule of changes in loans held at carrying value

+ References

No definition available.

+ Details

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

- Definition

Transfer of loan held for investment to loan held for sale.

+ References

No definition available.

+ Details

Name:	refi_TransferOfLoanHeldForInvestmentToLoanHeldForSale
Namespace Prefix:	refi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

+ Details

Name:	us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of interest income from investment paid in kind, classified as operating.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column E)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column E)(Footnote 6)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 320
-Name Accounting Standards Codification
-Section S99
-Paragraph 6
-Subparagraph (SX 210.12-14(Column E)(Footnote 6)(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477271/946-320-S99-6

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1

+ Details

Name:	us-gaap_InterestIncomeOperatingPaidInKind
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of expense related to credit loss from transactions other than loan and lease transactions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(11))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

+ Details

Name:	us-gaap_ProvisionForOtherCreditLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_FinancialInstrumentPerformanceStatusAxis=refi_PrincipalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentPerformanceStatusAxis=refi_OriginalIssueDiscountMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentPerformanceStatusAxis=refi_CurrentExpectedCreditLossReserveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: