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INVESTMENT SECURITIES - Cost basis and fair values of investment securities (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	$ 172,857,000	$ 184,018,000
Investment securities available for sale, Gross Unrealized Gains	186,000	226,000
Investment securities available for sale, Gross Unrealized Losses	(17,063,000)	(17,607,000)
Investment securities available for sale, Allowance for credit losses	(360,000)	(926,000)
Available for sale, Fair Value	155,620,000	165,711,000
Investment securities - HTM, Carrying Value	63,837,000	63,979,000
Investment securities held to maturity, Gross Unrealized Gains	28,000	49,000
Investment securities held to maturity, Gross Unrealized Losses	(5,394,000)	(5,407,000)
Investment securities - HTM, Fair Value	58,471,000	58,621,000
Investment securities held to maturity, Allowance for credit losses	(89,000)	(37,000)
U.S. Agency
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	5,345,000	6,035,000
Investment securities available for sale, Gross Unrealized Losses	(679,000)	(696,000)
Available for sale, Fair Value	4,666,000	5,339,000
Investment securities - HTM, Carrying Value	2,500,000	2,500,000
Investment securities held to maturity, Gross Unrealized Losses	(365,000)	(379,000)
Investment securities - HTM, Fair Value	2,135,000	2,121,000
Investment securities held to maturity, Allowance for credit losses	0
U.S. Agency mortgage-backed securities
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	104,227,000	104,820,000
Investment securities available for sale, Gross Unrealized Gains	90,000	179,000
Investment securities available for sale, Gross Unrealized Losses	(12,783,000)	(11,924,000)
Available for sale, Fair Value	91,534,000	93,075,000
Investment securities - HTM, Carrying Value	26,966,000	24,222,000
Investment securities held to maturity, Gross Unrealized Gains	28,000	49,000
Investment securities held to maturity, Gross Unrealized Losses	(2,403,000)	(2,058,000)
Investment securities - HTM, Fair Value	24,591,000	22,213,000
Investment securities held to maturity, Allowance for credit losses	0
Municipal
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	9,031,000	11,159,000
Investment securities available for sale, Gross Unrealized Gains	2,000	1,000
Investment securities available for sale, Gross Unrealized Losses	(670,000)	(800,000)
Available for sale, Fair Value	8,363,000	10,360,000
Investment securities - HTM, Carrying Value	30,959,000	32,787,000
Investment securities held to maturity, Gross Unrealized Losses	(2,553,000)	(2,797,000)
Investment securities - HTM, Fair Value	28,406,000	29,990,000
Investment securities held to maturity, Allowance for credit losses	(2,000)	(2,000)
Corporate bonds
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	54,254,000	62,004,000
Investment securities available for sale, Gross Unrealized Gains	94,000	46,000
Investment securities available for sale, Gross Unrealized Losses	(2,931,000)	(4,187,000)
Investment securities available for sale, Allowance for credit losses	(360,000)	(926,000)
Available for sale, Fair Value	51,057,000	56,937,000
Corporate bonds and other securities
Information concerning investments with unrealized gains and losses
Investment securities - HTM, Carrying Value	3,412,000	4,470,000
Investment securities held to maturity, Gross Unrealized Losses	(73,000)	(173,000)
Investment securities - HTM, Fair Value	3,339,000	4,297,000
Investment securities held to maturity, Allowance for credit losses	$ (87,000)	$ (35,000)

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