BORROWED FUNDS - Senior Notes (Details) - USD ($)		12 Months Ended
	May 19, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Senior notes, net		$ 14,831,000	$ 14,765,000
Senior Notes with an aggregate par value of $15,000,000; bearing interest at 2.75% with an effective interest rate of 3.23%; maturing in June 2026
Debt Instrument [Line Items]
Aggregate par value	$ 15,000,000.0	$ 15,000,000	$ 15,000,000
Stated interest rate	2.75%	2.75%	2.75%
Debt issuance costs	$ 337,000
Senior notes, net	$ 14,663,000	$ 14,831,000	$ 14,765,000
Amortization of debt issuance costs		$ 66,000	$ 64,000	$ 38,000
Effective interest rate		3.23%	3.23%