Securities, HTM Securities in Continuous Unrealized Loss Position (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) Position	Dec. 31, 2022 USD ($) Position
Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months	$ 26,643	$ 393,788
12 months or longer	675,260	349,496
Total	701,903	743,284
Unrealized Loss Position, Unrealized Losses [Abstract]
Less than 12 months	(492)	(27,889)
12 months or longer	(90,522)	(79,190)
Total	$ (91,014)	$ (107,079)
Unrealized Loss Position, Number of Positions [Abstract]
Less than 12 months | Position	22	217
12 months or longer | Position	280	101
Total | Position	302	318
HTM debt securities, nonaccrual	$ 0	$ 0
Accrued interest reversed against interest income	0	0
Collateral-dependent HTM debt securities	0	0
AIR on HTM debt securities	$ 4,700	$ 3,800
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Other Assets	Other Assets
Past Due [Member]
Unrealized Loss Position, Number of Positions [Abstract]
HTM debt securities	$ 0	$ 0
Federal Agency [Member]
Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months	0	0
12 months or longer	82,216	79,322
Total	82,216	79,322
Unrealized Loss Position, Unrealized Losses [Abstract]
Less than 12 months	0	0
12 months or longer	(17,784)	(20,678)
Total	$ (17,784)	$ (20,678)
Unrealized Loss Position, Number of Positions [Abstract]
Less than 12 months | Position	0	0
12 months or longer | Position	4	4
Total | Position	4	4
Mortgage-Backed [Member]
Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months	$ 12,221	$ 91,417
12 months or longer	201,320	138,936
Total	213,541	230,353
Unrealized Loss Position, Unrealized Losses [Abstract]
Less than 12 months	(365)	(9,096)
12 months or longer	(31,814)	(28,342)
Total	$ (32,179)	$ (37,438)
Unrealized Loss Position, Number of Positions [Abstract]
Less than 12 months | Position	1	21
12 months or longer | Position	33	13
Total | Position	34	34
Collateralized Mortgage Obligations [Member]
Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months	$ 0	$ 191,644
12 months or longer	219,820	48,289
Total	219,820	239,933
Unrealized Loss Position, Unrealized Losses [Abstract]
Less than 12 months	0	(13,863)
12 months or longer	(22,929)	(10,855)
Total	$ (22,929)	$ (24,718)
Unrealized Loss Position, Number of Positions [Abstract]
Less than 12 months | Position	0	47
12 months or longer | Position	54	8
Total | Position	54	55
State & Municipal [Member]
Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months	$ 14,422	$ 110,727
12 months or longer	171,904	82,949
Total	186,326	193,676
Unrealized Loss Position, Unrealized Losses [Abstract]
Less than 12 months	(127)	(4,930)
12 months or longer	(17,995)	(19,315)
Total	$ (18,122)	$ (24,245)
Unrealized Loss Position, Number of Positions [Abstract]
Less than 12 months | Position	21	149
12 months or longer | Position	189	76
Total | Position	210	225
US Government Agencies Debt Securities and US Government-sponsored Enterprises Debt Securities [Member]
Unrealized Loss Position, Number of Positions [Abstract]
Held-to-maturity debt securities, percentage	66.00%	70.00%