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v3.25.3

Investment Securities (Narrative) (Details) - USD ($) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Schedule of Investments [Line Items] |  |  |
Debt Securities, Available-for-sale | $ 817,713,000 |  | $ 996,624,000
Debt Securities, Available-for-sale, Unrealized Loss Position | 674,803,000 |  | 786,464,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 54,738,000 |  | 80,085,000
Securities Available-for-Sale, 12 months or longer, Fair value | 604,800,000 |  | 700,469,000
Debt Securities, Available-for-sale, Allowance for Credit Loss | 0 |  | 0
Debt Securities, Available-for-sale, Amortized Cost | $ 871,447,000 |  | 1,076,281,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% |  |
Gain (Loss) on Sale of Investments | $ 0 | $ 398,000 |
Debt securities available for sale, securities sold | 0 | 31,200,000 |
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Writeoff | 0 | $ 0 |
U.S. Government Sponsored Entities Asset-Backed Securities [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Debt Securities, Available-for-sale | 498,162,000 |  | 518,576,000
Debt Securities, Available-for-sale, Unrealized Loss Position | 461,747,000 |  | 517,401,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 38,411,000 |  | 61,694,000
Securities Available-for-Sale, 12 months or longer, Fair value | 449,051,000 |  | 510,846,000
Debt Securities, Available-for-sale, Amortized Cost | 536,113,000 |  | 580,268,000
USGovernmentSponsored asset backed securities and US Treasury obligations |  |  |
Schedule of Investments [Line Items] |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 38,400,000 |  |
Collateral Pledged [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Debt Securities, Available-for-sale, Restricted | $ 622,200,000 |  | $ 599,200,000

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