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Fair Value of Financial Instruments - Difference Between Fair Value and Unpaid Principal Balance (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2024
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	$ 6,974,000	$ 17,515,000
Principal Balance/Amortized Cost/Contributions	6,924,000	17,242,000
Difference	50,000	273,000
Nonaccrual mortgage loans held for sale recorded at fair value		0
Loans held for sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value		10,494,000
Principal Balance/Amortized Cost/Contributions		10,228,000
Difference		266,000
Securities carried at fair value through income
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	6,203,000	6,512,000
Principal Balance/Amortized Cost/Contributions	6,200,000	6,515,000
Difference	3,000	(3,000)
Rabbi Trust assets
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	771,000	509,000
Principal Balance/Amortized Cost/Contributions	724,000	499,000
Difference	$ 47,000	$ 10,000

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Fair value portion of mortgage loans held-for-sale.

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