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Fair Value of Financial Instruments - Difference Between Fair Value and Unpaid Principal Balance (Details) - USD ($) | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Aggregate Fair Value | $ 23,660,000 | $ 31,757,000
Principal Balance/Amortized Cost | 23,290,000 | 32,046,000
Difference | 370,000 | (289,000)
Nonaccrual mortgage loans held for sale recorded at fair value | 0 | 3,900,000
Loans held for sale |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Aggregate Fair Value | 16,852,000 | 25,389,000
Principal Balance/Amortized Cost | 16,475,000 | 24,946,000
Difference | 377,000 | 443,000
Securities carried at fair value through income |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Aggregate Fair Value | 6,808,000 | 6,368,000
Principal Balance/Amortized Cost | 6,815,000 | 7,100,000
Difference | $ (7,000) | (732,000)
U.S. government agency securities |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Loans, 90 days or more past due |  | $ 3,300,000

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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 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-30 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-31 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-32 + Details
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