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Fair Value of Financial Instruments - Difference Between Fair Value and Unpaid Principal Balance (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	$ 17,515,000	$ 23,660,000
Principal Balance/Amortized Cost/Contributions	17,242,000	23,290,000
Difference	273,000	370,000
Nonaccrual mortgage loans held for sale recorded at fair value	0	0
Loans held for sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	10,494,000	16,852,000
Principal Balance/Amortized Cost/Contributions	10,228,000	16,475,000
Difference	266,000	377,000
Securities carried at fair value through income
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	6,512,000	6,808,000
Principal Balance/Amortized Cost/Contributions	6,515,000	6,815,000
Difference	(3,000)	$ (7,000)
Rabbi Trust assets
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	509,000
Principal Balance/Amortized Cost/Contributions	499,000
Difference	$ 10,000

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Fair Value, Option, Aggregate Fair Value

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- Definition

This item represents the difference between the aggregate fair value and the aggregate unpaid principal balance of loans and long-term receivables (other than securities categorized as trading, available-for-sale or held-to-maturity) that have contractual principal amounts and for which the fair value option has been elected.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 28
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-URI https://asc.fasb.org/1943274/2147482907/825-10-50-30

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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