Debt Securities - Amortized cost and fair value (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Available for Sale
Amortized Cost	$ 64,338		$ 63,770
Gross Unrealized Gains	47		61
Gross Unrealized Losses	(4,315)		(3,938)
Estimated Fair Value	60,070		59,893
Held to Maturity
Amortized Cost	17,521		18,283
Gross Unrealized Gains	2		1
Gross Unrealized Losses	(1,664)		(1,540)
Held-to-Maturity Securities, Fair Value	15,859		16,744
Sales of available for sale securities	0	$ 0
Sales of held to maturity securities	0	$ 0
Collateral Pledged
Held to Maturity
Debt securities pledged as collateral	14,872		14,815
Residential mortgage-backed
Available for Sale
Amortized Cost	6,741		6,475
Gross Unrealized Losses	(740)		(679)
Estimated Fair Value	6,001		5,796
Held to Maturity
Amortized Cost	15,453		16,112
Gross Unrealized Losses	(1,631)		(1,534)
Held-to-Maturity Securities, Fair Value	13,822		14,578
Collateralized mortgage obligations
Available for Sale
Amortized Cost	37,337		37,023
Gross Unrealized Gains			12
Gross Unrealized Losses	(1,530)		(1,293)
Estimated Fair Value	35,807		35,742
State and municipal
Available for Sale
Amortized Cost	9,736		9,753
Gross Unrealized Losses	(1,119)		(1,010)
Estimated Fair Value	8,617		8,743
Held to Maturity
Amortized Cost	1,200		1,200
Gross Unrealized Losses	(33)		(6)
Held-to-Maturity Securities, Fair Value	1,167		1,194
Corporate bonds
Available for Sale
Amortized Cost	10,524		10,519
Gross Unrealized Gains	47		49
Gross Unrealized Losses	(926)		(956)
Estimated Fair Value	9,645		9,612
U.S. Government and agency
Held to Maturity
Amortized Cost	868		971
Gross Unrealized Gains	2		1
Held-to-Maturity Securities, Fair Value	$ 870		$ 972

Amortized cost of investment in debt security that are sold.

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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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Amount, before tax, of unrealized loss 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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Amount of restricted 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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Amount excluding accrued interest, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).

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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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The cash inflow associated with the sale of securities that had been designated as held-to-maturity. Excludes proceeds from maturities, prepayments and calls by the issuer.

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