DEBT SECURITIES - Amortized cost and fair value of securities held-to-maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
Debt Securities, Held-to-Maturity, Maturity [Abstract]
Amortized Cost	$ 95,113	$ 95,044
Gross Unrecognized Gains	434	329
Gross Unrecognized Losses	(4,772)	(4,738)
Fair Value	90,775	90,635
Allowance for Credit Losses	(83)	(74)
US Treasury Securities
Debt Securities, Held-to-Maturity, Maturity [Abstract]
Amortized Cost	248	248
Gross Unrecognized Gains	0	1
Gross Unrecognized Losses	(1)	0
Fair Value	247	249
Allowance for Credit Losses	0	0
US Government-sponsored Enterprises Debt Securities
Debt Securities, Held-to-Maturity, Maturity [Abstract]
Amortized Cost	3,335	3,412
Gross Unrecognized Gains	3	3
Gross Unrecognized Losses	(162)	(131)
Fair Value	3,176	3,284
Allowance for Credit Losses	0	0
Residential mortgage-backed securities issued by U.S. government agencies and sponsored enterprises | Residential Portfolio Segment
Debt Securities, Held-to-Maturity, Maturity [Abstract]
Amortized Cost	56,952	59,839
Gross Unrecognized Gains	134	209
Gross Unrecognized Losses	(3,248)	(3,005)
Fair Value	53,838	57,043
Allowance for Credit Losses	0	0
Residential mortgage-backed securities issued by U.S. government agencies and sponsored enterprises | Commercial Portfolio Segment
Debt Securities, Held-to-Maturity, Maturity [Abstract]
Amortized Cost	6,133	6,138
Gross Unrecognized Gains	0	0
Gross Unrecognized Losses	(14)	(8)
Fair Value	6,119	6,130
Allowance for Credit Losses	0	0
Residential Mortgage Back Securities - Other
Debt Securities, Held-to-Maturity, Maturity [Abstract]
Amortized Cost	730	751
Gross Unrecognized Gains	0	0
Gross Unrecognized Losses	(47)	(47)
Fair Value	683	704
Allowance for Credit Losses	0	0
Corporate bonds
Debt Securities, Held-to-Maturity, Maturity [Abstract]
Amortized Cost	27,715	24,656
Gross Unrecognized Gains	297	116
Gross Unrecognized Losses	(1,300)	(1,547)
Fair Value	26,712	23,225
Allowance for Credit Losses	$ (83)	$ (74)	$ (71)	$ (71)