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Securities - Available-for-Sale and Held-to-Maturity by Contractual Maturity (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Securities |  |
Securities held-to-maturity, Amortized Cost, Due after ten years | $ 43,039 |
Securities, held-to-maturity, Amortized Cost, With single maturity date | 43,039 |
Securities, held-to-maturity, Amortized Cost | 50,860 | $ 51,838
Securities held-to-maturity, Fair Value, Due after ten years | 39,196 |
Securities held-to-maturity, Fair Value, With single maturity date | 39,196 |
Debt Securities, Held-to-maturity, Fair Value, Total | 46,384 | 44,718
Securities available-for-sale, Amortized Cost, Due after one years through five years | 70,359 |
Securities available-for-sale, Amortized Cost, Due after five years through ten years | 191,469 |
Securities available-for-sale, Amortized Cost, Due after ten years | 366,665 |
Securities available-for-sale, Amortized Cost, With single maturity date | 628,493 |
Total Securities available for sale, Amortized Cost | 1,541,505 | 1,506,798
Securities available for sale, Fair Value, Due after one years through five years | 69,312 |
Securities available for sale, Fair Value, Due after five years through ten years | 191,305 |
Securities available for sale, Fair Value, Due after ten years | 362,034 |
Securities available-for-sale, Fair Value, With single maturity date | 622,651 |
Total securities available for sale, Fair Value | 1,541,423 | 1,497,905
Mortgage-backed securities |  |
Securities |  |
Securities held-to-maturity, Amortized Cost, Without single maturity | 7,821 |
Securities held-to-maturity, Fair Value, Without single maturity date | 7,188 |
Securities, available-for-sale, Amortized Cost, Without single maturity date | 900,510 |
Total Securities available for sale, Amortized Cost | 900,510 | 912,870
Securities available-for-sale, Fair Value, Without single maturity date | 906,270 |
Total securities available for sale, Fair Value | 906,270 | 911,636
Mutual funds |  |
Securities |  |
Securities, available-for-sale, Amortized Cost, Without single maturity date | 12,502 |
Total Securities available for sale, Amortized Cost | 12,502 | 11,890
Securities available-for-sale, Fair Value, Without single maturity date | 12,502 |
Total securities available for sale, Fair Value | $ 12,502 | $ 11,890

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