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Derivative Financial Instruments Summary of Mortgage Loans Held For Sale (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |
Loans held for sale | $ 20,368,000 |  | $ 20,368,000 |  | $ 7,264,000
Mortgage Loans Held For Sale |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |
Fair Value, Option, Changes in Fair Value, Gain (Loss) | 0 | $ (500,000) | 100,000 | $ (1,100,000) |
Cost [Member] | Mortgage Loans Held For Sale |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |
Loans held for sale | 20,206,000 |  | 20,206,000 |  | 7,180,000
Fair value [Member] | Mortgage Loans Held For Sale |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |
Loans held for sale | $ 20,368,000 |  | $ 20,368,000 |  | $ 7,264,000

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