INVESTMENT SECURITIES - Unrecognized losses aggregated by major securities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value		$ 58,574
Less than 12 months, unrecognized losses		(4,543)
12 months or longer, fair value		15,339
12 months or longer, unrecognized losses		(1,808)
Total fair value		73,913
Gross Unrecognized Losses	$ (7,565)	(6,351)
U.S. Treasury debt
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value		0
Less than 12 months, unrecognized losses		0
12 months or longer, fair value		234
12 months or longer, unrecognized losses		(9)
Total fair value		234
Gross Unrecognized Losses	(11)	(9)
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value		20,911
Less than 12 months, unrecognized losses		(2,436)
12 months or longer, fair value		455
12 months or longer, unrecognized losses		(17)
Total fair value		21,366
Gross Unrecognized Losses	(3,020)	(2,453)
GNMA mortgage-backed securities – residential
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value		22,371
Less than 12 months, unrecognized losses		(1,051)
12 months or longer, fair value		14,255
12 months or longer, unrecognized losses		(1,749)
Total fair value		36,626
Gross Unrecognized Losses	(3,410)	(2,800)
FNMA mortgage-backed securities – residential
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value		6,202
Less than 12 months, unrecognized losses		(506)
12 months or longer, fair value		0
12 months or longer, unrecognized losses		0
Total fair value		6,202
Gross Unrecognized Losses	(509)	(506)
Government CMO and MBS - commercial
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value		5,591
Less than 12 months, unrecognized losses		(403)
12 months or longer, fair value		0
12 months or longer, unrecognized losses		0
Total fair value		5,591
Gross Unrecognized Losses	(377)	(403)
Corporate CMO and MBS(2)
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, fair value		3,499
Less than 12 months, unrecognized losses		(147)
12 months or longer, fair value		395
12 months or longer, unrecognized losses		(33)
Total fair value		3,894
Gross Unrecognized Losses	$ (238)	$ (180)