FAIR VALUE - Summary of Level 3 Fair Value Measurement Activity (Details) - Level 3 - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Interest rate lock commitments on residential mortgages
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	$ 55	$ 71	$ 20	$ 55
Total gains included in earnings	34	47	69	63
Balance, end of period	89	118	89	118
Collateralized Mortgage Obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	16,140	17,567	16,920	27,853
Unrealized gains (losses) included in OCI	60	649	(492)	731
Net discount accretion	17	17	49	50
Principal payments and other	(216)	(134)	(476)	(428)
Calls	0	0	0	(10,107)
Balance, end of period	$ 16,001	$ 18,099	$ 16,001	$ 18,099