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Securities - Available-for-Sale and Held-to-Maturity by Contractual Maturity (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Securities held-to-maturity, Amortized Cost, Due after ten years | $ 44,002 |
Securities, held-to-maturity, Amortized Cost, With single maturity date | 44,002 |
Securities, held-to-maturity, Amortized Cost | 51,838 | $ 74,010
Securities held-to-maturity, Fair Value, Due after ten years | 37,815 |
Securities held-to-maturity, Fair Value, With single maturity date | 37,815 |
Debt Securities, Held-to-maturity, Fair Value, Total | 44,718 | 65,755
Securities available-for-sale, Amortized Cost, Due after one years through five years | 57,065 |
Securities available-for-sale, Amortized Cost, Due after five years through ten years | 198,589 |
Securities available-for-sale, Amortized Cost, Due after ten years | 326,384 |
Securities available-for-sale, Amortized Cost, With single maturity date | 582,038 |
Total Securities available for sale, Amortized Cost | 1,506,798 |
Securities available for sale, Fair Value, Due after one years through five years | 54,747 |
Securities available for sale, Fair Value, Due after five years through ten years | 195,649 |
Securities available for sale, Fair Value, Due after ten years | 323,983 |
Securities available-for-sale, Fair Value, With single maturity date | 574,379 |
Total securities available for sale, Fair Value | 1,497,905 | 874,753
Designated as Hedging Instrument [Member] | Portfolio Layer Hedges on Closed Portfolio of Securities Available for Sale [Member] |  |
Total securities available for sale, Fair Value |  | 283,200
Total Other Securities [Member] |  |
Total Securities available for sale, Amortized Cost | 593,928 |
Total securities available for sale, Fair Value | 586,269 | 520,409
Collateralized Mortgage Backed Securities |  |
Securities held-to-maturity, Amortized Cost, Without single maturity | 7,836 |
Securities held-to-maturity, Fair Value, Without single maturity date | 6,903 |
Securities, available-for-sale, Amortized Cost, Without single maturity date | 912,870 |
Total Securities available for sale, Amortized Cost | 912,870 |
Securities available-for-sale, Fair Value, Without single maturity date | 911,636 |
Total securities available for sale, Fair Value | 911,636 | 354,344
Mutual Fund Debt Securities [Member] |  |
Securities, available-for-sale, Amortized Cost, Without single maturity date | 11,890 |
Total Securities available for sale, Amortized Cost | 11,890 |
Securities available-for-sale, Fair Value, Without single maturity date | 11,890 |
Total securities available for sale, Fair Value | $ 11,890 | $ 11,660

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