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Securities - Available-for-Sale and Held-to-Maturity by Contractual Maturity (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Securities held-to-maturity, Amortized Cost, Due after ten years | $ 43,678 |
Securities, held-to-maturity, Amortized Cost, With single maturity date | 43,678 |
Securities, held-to-maturity, Amortized Cost | 51,509 | $ 51,838
Securities held-to-maturity, Fair Value, Due after ten years | 37,583 |
Securities held-to-maturity, Fair Value, With single maturity date | 37,583 |
Debt Securities, Held-to-maturity, Fair Value, Total | 44,670 | 44,718
Securities available-for-sale, Amortized Cost, Due after one years through five years | 56,323 |
Securities available-for-sale, Amortized Cost, Due after five years through ten years | 224,382 |
Securities available-for-sale, Amortized Cost, Due after ten years | 285,904 |
Securities available-for-sale, Amortized Cost, With single maturity date | 566,609 |
Total Securities available for sale, Amortized Cost | 1,454,886 | 1,506,798
Securities available for sale, Fair Value, Due after one years through five years | 54,411 |
Securities available for sale, Fair Value, Due after five years through ten years | 221,888 |
Securities available for sale, Fair Value, Due after ten years | 282,119 |
Securities available-for-sale, Fair Value, With single maturity date | 558,418 |
Total securities available for sale, Fair Value | 1,450,144 | 1,497,905
Total Other Securities [Member] |  |
Total Securities available for sale, Amortized Cost | 578,769 | 593,928
Total securities available for sale, Fair Value | 570,578 | 586,269
Collateralized Mortgage Backed Securities |  |
Securities held-to-maturity, Amortized Cost, Without single maturity | 7,831 |
Securities held-to-maturity, Fair Value, Without single maturity date | 7,087 |
Securities, available-for-sale, Amortized Cost, Without single maturity date | 876,117 |
Total Securities available for sale, Amortized Cost | 876,117 | 912,870
Securities available-for-sale, Fair Value, Without single maturity date | 879,566 |
Total securities available for sale, Fair Value | 879,566 | 911,636
Mutual Fund Debt Securities [Member] |  |
Securities, available-for-sale, Amortized Cost, Without single maturity date | 12,160 |
Total Securities available for sale, Amortized Cost | 12,160 | 11,890
Securities available-for-sale, Fair Value, Without single maturity date | 12,160 |
Total securities available for sale, Fair Value | $ 12,160 | $ 11,890

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