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MORTGAGE SERVICING RIGHTS - Additional Information (Details) | 3 Months Ended
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Mar. 31, 2026 USD ($) sub-servicer | Mar. 31, 2025 USD ($)
Mortgage Servicing Rights MSR [Line Items] |  |
Number of sub-servicers | sub-servicer | 2 |
Mortgage servicing rights |  |
Mortgage Servicing Rights MSR [Line Items] |  |
Loans associated with MSRs | $ | $ 52,755,018 | $ 60,896,737

X
- Definition It represents the mortgage loans associated. + References No definition available. + Details
Name: | oaks_MortgageLoansAssociated
Namespace Prefix: | oaks_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Mortgage Servicing Rights MSR + References No definition available. + Details
Name: | oaks_MortgageServicingRightsMSRLineItems
Namespace Prefix: | oaks_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of Sub-Servers + References No definition available. + Details
Name: | oaks_NumberOfSubServers
Namespace Prefix: | oaks_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=oaks_MortgageServicingRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |