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FAIR VALUE OF FINANCIAL INSTRUMENTS - Fair Value Measurement Inputs (Details) - Valuation Technique, Discounted Cash Flow | Dec. 31, 2022 | Dec. 31, 2021
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SBA 7(a) loans receivable, Paycheck Protection Program | Discount Rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input for loans receivable |  | 0.0100
Minimum | SBA 7(a) loans receivable, subject to credit risk | Discount Rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input for loans receivable | 0.1100 | 0.0625
Minimum | SBA 7(a) loans receivable, subject to credit risk | Prepayment Rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input for loans receivable | 0.0500 | 0.0500
Minimum | SBA 7(a) loans receivable, subject to loan-backed notes | Discount Rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input for loans receivable |  | 0.0575
Minimum | SBA 7(a) loans receivable, subject to loan-backed notes | Prepayment Rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input for loans receivable |  | 0.0500
Minimum | SBA 7(a) loans receivable, subject to secured borrowings | Discount Rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input for loans receivable | 0.1100 | 0.0700
Minimum | SBA 7(a) loans receivable, subject to secured borrowings | Prepayment Rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input for loans receivable | 0.0500 | 0.0500
Maximum | SBA 7(a) loans receivable, subject to credit risk | Discount Rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input for loans receivable | 0.1125 | 0.0825
Maximum | SBA 7(a) loans receivable, subject to credit risk | Prepayment Rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input for loans receivable | 0.1700 | 0.1750
Maximum | SBA 7(a) loans receivable, subject to loan-backed notes | Discount Rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input for loans receivable |  | 0.0775
Maximum | SBA 7(a) loans receivable, subject to loan-backed notes | Prepayment Rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input for loans receivable |  | 0.1750
Maximum | SBA 7(a) loans receivable, subject to secured borrowings | Discount Rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input for loans receivable | 0.1125 | 0.0775
Maximum | SBA 7(a) loans receivable, subject to secured borrowings | Prepayment Rate |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement input for loans receivable | 0.1700 | 0.1750

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