BORROWED FUNDS - Senior Notes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Senior notes, net	$ 14,899,000	$ 14,831,000
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	$ 15,000,000		$ 15,000,000
Stated interest rate	2.75%	2.75%		2.75%
Debt issuance costs				$ 337,000
Senior notes, net	$ 14,899,000	$ 14,831,000		$ 14,663,000
Amortization of debt issuance costs	$ 68,000	$ 66,000	$ 64,000
Effective interest rate	3.23%	3.23%