INVESTMENT SECURITIES - Cost basis and fair values of investment securities (Details) - USD ($)	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	$ 186,171,000	$ 172,857,000
Investment securities available for sale, Gross Unrealized Gains	1,166,000	186,000
Investment securities available for sale, Gross Unrealized Losses	(11,109,000)	(17,063,000)
Investment securities available for sale, Allowance for credit losses	0	(360,000)	$ (926,000)
Available for sale, Fair Value	176,228,000	155,620,000
Investment securities - HTM, Cost Basis	72,346,000	63,926,000
Investment securities held to maturity, Allowance for credit losses	(90,000)	(89,000)	(37,000)
Investment securities - HTM, Carrying Value	72,256,000	63,837,000
Investment securities held to maturity, Gross Unrealized Gains	216,000	28,000
Investment securities held to maturity, Gross Unrealized Losses	(3,556,000)	(5,394,000)
Investment securities - HTM, Fair Value	68,916,000	58,471,000
U.S. Agency
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	5,162,000	5,345,000
Investment securities available for sale, Gross Unrealized Losses	(372,000)	(679,000)
Available for sale, Fair Value	4,790,000	4,666,000
Investment securities - HTM, Cost Basis	2,500,000	2,500,000
Investment securities held to maturity, Allowance for credit losses	0
Investment securities - HTM, Carrying Value	2,500,000	2,500,000
Investment securities held to maturity, Gross Unrealized Losses	(216,000)	(365,000)
Investment securities - HTM, Fair Value	2,284,000	2,135,000
U.S. Agency mortgage-backed securities
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	119,381,000	104,227,000
Investment securities available for sale, Gross Unrealized Gains	639,000	90,000
Investment securities available for sale, Gross Unrealized Losses	(9,164,000)	(12,783,000)
Available for sale, Fair Value	110,856,000	91,534,000
Investment securities - HTM, Cost Basis	36,592,000	26,966,000
Investment securities held to maturity, Allowance for credit losses	0
Investment securities - HTM, Carrying Value	36,592,000	26,966,000
Investment securities held to maturity, Gross Unrealized Gains	210,000	28,000
Investment securities held to maturity, Gross Unrealized Losses	(1,820,000)	(2,403,000)
Investment securities - HTM, Fair Value	34,982,000	24,591,000
Municipal
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	10,155,000	9,031,000
Investment securities available for sale, Gross Unrealized Gains	140,000	2,000
Investment securities available for sale, Gross Unrealized Losses	(361,000)	(670,000)
Available for sale, Fair Value	9,934,000	8,363,000
Investment securities - HTM, Cost Basis	30,754,000	30,961,000
Investment securities held to maturity, Allowance for credit losses	(1,000)	(2,000)	(2,000)
Investment securities - HTM, Carrying Value	30,753,000	30,959,000
Investment securities held to maturity, Gross Unrealized Gains	6,000
Investment securities held to maturity, Gross Unrealized Losses	(1,415,000)	(2,553,000)
Investment securities - HTM, Fair Value	29,344,000	28,406,000
Corporate bonds
Information concerning investments with unrealized gains and losses
Investment securities available for sale, Cost Basis	51,473,000	54,254,000
Investment securities available for sale, Gross Unrealized Gains	387,000	94,000
Investment securities available for sale, Gross Unrealized Losses	(1,212,000)	(2,931,000)
Investment securities available for sale, Allowance for credit losses		(360,000)	(926,000)
Available for sale, Fair Value	50,648,000	51,057,000
Corporate bonds and other securities
Information concerning investments with unrealized gains and losses
Investment securities - HTM, Cost Basis	2,500,000	3,499,000
Investment securities held to maturity, Allowance for credit losses	(89,000)	(87,000)	$ (35,000)
Investment securities - HTM, Carrying Value	2,411,000	3,412,000
Investment securities held to maturity, Gross Unrealized Losses	(105,000)	(73,000)
Investment securities - HTM, Fair Value	$ 2,306,000	$ 3,339,000

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost excluding accrued interest, before allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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