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MORTGAGE SERVICING RIGHTS - Components of Servicing Income (Details) - Mortgages - USD ($)	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Schedule Of Components Of Servicing Income [Line Items]
Servicing income, net	$ 54,421	$ 64,880
Total servicing income	$ 54,421	$ 64,880

X

- Definition

It represents the income from mortgage loans on real estate.

+ References

No definition available.

+ Details

Name:	oaks_IncomeFromMortgageLoansOnRealEstate
Namespace Prefix:	oaks_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

It represents the mortgage loans on real estate net.

+ References

No definition available.

+ Details

Name:	oaks_MortgageLoansOnRealEstateNet
Namespace Prefix:	oaks_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	oaks_ScheduleOfComponentsOfServicingIncomeLineItems
Namespace Prefix:	oaks_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_MortgagesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: