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Derivative Financial Instruments - Net Gains (Losses) Relating to Derivative Instruments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Derivative [Line Items] |  |  |  |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Mortgage revenue |  |  | Mortgage revenue
Interest rate lock commitments | Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Net change in fair value of interest rate swaps | $ (16) | $ (111) | $ (28) | $ 38
Forward sales commitments | Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Net change in fair value of interest rate swaps | 60 | 295 | 92 | 82
Net gains (losses) | Designated as Hedging Instrument |  |  |  |
Derivative [Line Items] |  |  |  |
Net change in fair value of interest rate swaps | $ 44 | $ 184 | $ 64 | $ 120

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A + Details
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- Definition Indicates line item in statement of income or comprehensive income that includes gain (loss) from derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A + Details
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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 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480237/815-40-50-5 + Details
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