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INVESTMENT SECURITIES - Cost basis and fair values of investment securities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	$ 198,417	$ 161,416
Investment securities available for sale, Gross Unrealized Gains	95	3,167
Investment securities available for sale, Gross Unrealized Losses	(19,004)	(1,412)
Available for Sale, Fair Value, Total	179,508	163,171
Investment securities held to maturity, Cost Basis	61,878	53,751
Investment securities held to maturity, Gross Unrealized Gains	10	2,001
Investment securities held to maturity, Gross Unrealized Losses	(6,696)	(236)
Held to Maturity, Fair Value, Total	55,192	55,516
U.S. Agency
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	11,797	7,371
Investment securities available for sale, Gross Unrealized Gains	1	86
Investment securities available for sale, Gross Unrealized Losses	(1,265)	(70)
Available for Sale, Fair Value, Total	10,533	7,387
Investment securities held to maturity, Cost Basis	2,500	2,500
Investment securities held to maturity, Gross Unrealized Losses	(432)	(11)
Held to Maturity, Fair Value, Total	2,068	2,489
U.S. Agency mortgage-backed securities
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	102,631	80,136
Investment securities available for sale, Gross Unrealized Gains	64	1,202
Investment securities available for sale, Gross Unrealized Losses	(12,710)	(1,171)
Available for Sale, Fair Value, Total	89,985	80,167
Investment securities held to maturity, Cost Basis	18,877	10,556
Investment securities held to maturity, Gross Unrealized Gains	8	203
Investment securities held to maturity, Gross Unrealized Losses	(2,212)	(115)
Held to Maturity, Fair Value, Total	16,673	10,644
Municipal
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	20,837	20,066
Investment securities available for sale, Gross Unrealized Gains		851
Investment securities available for sale, Gross Unrealized Losses	(1,799)	(25)
Available for Sale, Fair Value, Total	19,038	20,892
Investment securities held to maturity, Cost Basis	33,993	33,188
Investment securities held to maturity, Gross Unrealized Gains	2	1,734
Investment securities held to maturity, Gross Unrealized Losses	(3,880)	(103)
Held to Maturity, Fair Value, Total	30,115	34,819
Corporate bonds.
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	63,152	53,843
Investment securities available for sale, Gross Unrealized Gains	30	1,028
Investment securities available for sale, Gross Unrealized Losses	(3,230)	(146)
Available for Sale, Fair Value, Total	59,952	54,725
Corporate bonds and other securities
Information concerning investments with unrealized gains and losses
Investment securities held to maturity, Cost Basis	6,508	7,507
Investment securities held to maturity, Gross Unrealized Gains		64
Investment securities held to maturity, Gross Unrealized Losses	(172)	(7)
Held to Maturity, Fair Value, Total	$ 6,336	$ 7,564

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