LOANS RECEIVABLE - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase (decrease) in expected credit losses	$ (36)	$ 51
Allowance for credit losses	1,644	$ 1,940	$ 1,680	$ 1,106
Loans receivable, net	$ 56,229		$ 57,005
SBA 7(a) Loans Receivable, Subject to Credit Risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, percent current	97.80%		99.30%
SBA 7(a) Loans Receivable, Subject to Credit Risk | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable, net	$ 1,600		$ 1,300
Accounts Receivable | Customer Concentration Risk | Hospitality Industry
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk	100.00%		100.00%
Cumulative-effect adjustment upon adoption of ASU 2016-13
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for credit losses				$ 783