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Securities, Securities in Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Securities [Abstract]
Percentage of total investment with unrealized losses	95.50%	97.30%
Available-for-sale, amortized cost [Abstract]
Less than 12 months	$ 68,231	$ 35,971
12 months or more	1,071,609	1,234,191
Total	1,139,840	1,270,162
Available-for-sale, gross unrealized losses [Abstract]
Less than 12 months	(1,202)	(1,544)
12 months or more	(129,956)	(136,221)
Total	(131,158)	(137,765)
Available-for-sale, fair value [Abstract]
Less than 12 months	67,029	34,427
12 months or more	941,653	1,097,970
Total	1,008,682	1,132,397
U.S. Treasury and Government Agencies [Member]
Available-for-sale, amortized cost [Abstract]
Less than 12 months	1,396	3,761
12 months or more	351,315	361,038
Total	352,711	364,799
Available-for-sale, gross unrealized losses [Abstract]
Less than 12 months	(2)	(5)
12 months or more	(18,614)	(26,567)
Total	(18,616)	(26,572)
Available-for-sale, fair value [Abstract]
Less than 12 months	1,394	3,756
12 months or more	332,701	334,471
Total	334,095	338,227
State and Political Subdivisions [Member]
Available-for-sale, amortized cost [Abstract]
Less than 12 months	14,262	16,154
12 months or more	288,445	284,397
Total	302,707	300,551
Available-for-sale, gross unrealized losses [Abstract]
Less than 12 months	(192)	(1,250)
12 months or more	(50,851)	(47,040)
Total	(51,043)	(48,290)
Available-for-sale, fair value [Abstract]
Less than 12 months	14,070	14,904
12 months or more	237,594	237,357
Total	251,664	252,261
U.S. Government Sponsored Agency Mortgage-backed Securities [Member]
Available-for-sale, amortized cost [Abstract]
Less than 12 months	28,028	16,056
12 months or more	416,270	500,763
Total	444,298	516,819
Available-for-sale, gross unrealized losses [Abstract]
Less than 12 months	(994)	(289)
12 months or more	(60,428)	(61,847)
Total	(61,422)	(62,136)
Available-for-sale, fair value [Abstract]
Less than 12 months	27,034	15,767
12 months or more	355,842	438,916
Total	382,876	454,683
Asset-backed Securities [Member]
Available-for-sale, amortized cost [Abstract]
Less than 12 months	24,545	0
12 months or more	15,579	87,993
Total	40,124	87,993
Available-for-sale, gross unrealized losses [Abstract]
Less than 12 months	(14)	0
12 months or more	(63)	(767)
Total	(77)	(767)
Available-for-sale, fair value [Abstract]
Less than 12 months	24,531	0
12 months or more	15,516	87,226
Total	$ 40,047	$ 87,226

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