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AFS Securities - Amortized Cost and Fair Value of AFS Securities, with Gross Unrealized Gains and Losses (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 507,689 | $ 515,516
Gross Unrealized Gains | 1,194 | 9
Gross Unrealized Losses | 11,092 | 26,496
AFS securities, at fair value | 497,791 | 489,029
U.S. Treasury |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 200,327 | 230,807
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 2,793 | 10,236
AFS securities, at fair value | 197,534 | 220,571
States and political subdivisions |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 71,857 | 81,135
Gross Unrealized Gains | 45 | 9
Gross Unrealized Losses | 2,697 | 4,576
AFS securities, at fair value | 69,205 | 76,568
Auction rate money market preferred |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 3,200 | 3,200
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 787 | 156
AFS securities, at fair value | 2,413 | 3,044
Mortgage-backed securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 23,373 | 29,068
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 1,121 | 2,182
AFS securities, at fair value | 22,252 | 26,886
Collateralized mortgage obligations |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 202,482 | 163,156
Gross Unrealized Gains | 1,149 | 0
Gross Unrealized Losses | 3,165 | 8,482
AFS securities, at fair value | 200,466 | 154,674
Corporate |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 6,450 | 8,150
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 529 | 864
AFS securities, at fair value | $ 5,921 | $ 7,286

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 + Details
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