LOANS RECEIVABLE- Loans Receivable, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 57,555				$ 62,360
Deferred capitalized costs, net	1,130				1,293
Current expected credit losses	(1,680)	$ (1,704)	$ (1,713)	$ (1,940)	(1,106)
Loans receivable, net	57,005				62,547
SBA 7(a) loans receivable, subject to credit risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	10,393				56,116
SBA 7(a) loans receivable, subject to loan-backed notes
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	43,983				0
SBA 7(a) loans receivable, subject to secured borrowings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	3,105				6,127
SBA 7(a) loans receivable, held for sale
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 74				$ 117