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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