Securities - Reconciliation From Amortized Cost to Estimated Fair Value of Marketable Securities (Details) - USD ($)	Jun. 30, 2026	Dec. 31, 2025
Debt Securities, Available-for-Sale
Debt securities available for sale at amortized cost	$ 68,814,000	$ 72,474,000
Gross unrealized gains	453,000	352,000
Gross unrealized losses	(2,046,000)	(1,956,000)
Debt securities, available-for-sale, excluding accrued interest, at fair value	67,221,000	70,870,000
Allowance for credit losses for debt securities available for sale	0	0
Debt Securities, Held-to-Maturity
Amortized cost	37,707,000	36,576,000
Gross unrealized gains	58,000	42,000
Gross unrealized losses	(6,398,000)	(6,213,000)
Held to maturity securities at fair value	31,367,000	30,405,000
US Government-sponsored Enterprises Debt Securities
Debt Securities, Available-for-Sale
Debt securities available for sale at amortized cost	5,000,000	5,000,000
Gross unrealized gains
Gross unrealized losses	(35,000)	(31,000)
Debt securities, available-for-sale, excluding accrued interest, at fair value	4,965,000	4,969,000
Debt Securities, Held-to-Maturity
Amortized cost	28,000,000	28,000,000
Gross unrealized gains
Gross unrealized losses	(3,899,000)	(3,812,000)
Held to maturity securities at fair value	24,101,000	24,188,000
US States and Political Subdivisions Debt Securities
Debt Securities, Available-for-Sale
Debt securities available for sale at amortized cost	168,000	185,000
Gross unrealized gains
Gross unrealized losses	(19,000)	(26,000)
Debt securities, available-for-sale, excluding accrued interest, at fair value	149,000	159,000
Debt Securities, Held-to-Maturity
Amortized cost	2,319,000	1,299,000
Gross unrealized gains	58,000	42,000
Gross unrealized losses	(7,000)
Held to maturity securities at fair value	2,370,000	1,341,000
Asset-Backed Securities [Member]
Debt Securities, Available-for-Sale
Debt securities available for sale at amortized cost	19,000,000	22,001,000
Gross unrealized gains	17,000	11,000
Gross unrealized losses	(1,000)	(12,000)
Debt securities, available-for-sale, excluding accrued interest, at fair value	19,016,000	22,000,000
Residential Mortgage-Backed Securities
Debt Securities, Available-for-Sale
Debt securities available for sale at amortized cost	12,227,000	12,702,000
Gross unrealized gains	25,000	27,000
Gross unrealized losses	(1,105,000)	(977,000)
Debt securities, available-for-sale, excluding accrued interest, at fair value	11,147,000	11,752,000
Debt Securities, Held-to-Maturity
Amortized cost	7,388,000	7,277,000
Gross unrealized gains
Gross unrealized losses	(2,492,000)	(2,401,000)
Held to maturity securities at fair value	4,896,000	4,876,000
Corporate Debt Securities and Other Securities
Debt Securities, Available-for-Sale
Debt securities available for sale at amortized cost	32,419,000	32,586,000
Gross unrealized gains	411,000	314,000
Gross unrealized losses	(886,000)	(910,000)
Debt securities, available-for-sale, excluding accrued interest, at fair value	$ 31,944,000	$ 31,990,000

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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