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Securities, Gains (Loss) on Securities, Securities Pledged, and Securities Sold Under Agreements to Repurchase (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Gains (Loss) on Sales of Securities [Abstract] |  |  |  |  |
Net securities gain (loss) | $ 355 | $ (159) | $ 738 | $ (285) |
Realized pre-tax gain (loss) on sales and calls of AFS securities |  |  | 4 | (1) |
Unrealized (loss) gain from fair value adjustment of equity securities | 355 | (159) | 734 | $ (284) |
Equity Securities at Fair Value [Abstract] |  |  |  |  |
Equity securities at fair value | 2,900 |  | 2,900 |  | $ 2,166
Amortized cost of securities sold under agreements to repurchase | 350,200 |  | 350,200 |  | 316,900
Asset Pledged as Collateral [Member] | Public Deposits and for Other Purposes [Member] |  |  |  |  |
Equity Securities at Fair Value [Abstract] |  |  |  |  |
Securities | 752,200 |  | 752,200 |  | $ 725,000
Visa Class B Restricted Stock [Member] |  |  |  |  |
Equity Securities at Fair Value [Abstract] |  |  |  |  |
Equity securities at fair value | 2,900 |  | $ 2,900 |  |
Increase (decrease) in fair value of equity securities | $ 355 | $ (159) |  |  |
Number of equity securities sold (in shares) |  |  | 0 | 0 |

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- Definition Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481830/320-10-45-1 + Details
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