Securities - Securities Gross (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Less Than 12 Months
Fair Value	$ 279,598	$ 692,782
Unrealized Losses	(8,772)	(63,580)
More Than 12 Months
Fair Value	900,375	536,618
Unrealized Losses	(145,490)	(108,554)
Total
Fair Value	1,179,973	1,229,400
Unrealized Losses	(154,262)	(172,134)
U.S. Government agencies
Less Than 12 Months
Fair Value	26,041	58,462
Unrealized Losses	(1,069)	(4,034)
More Than 12 Months
Fair Value	70,008	38,959
Unrealized Losses	(9,116)	(7,743)
Total
Fair Value	96,049	97,421
Unrealized Losses	(10,185)	(11,777)
Mortgage Backed Securities - residential
Less Than 12 Months
Fair Value	109,292	234,488
Unrealized Losses	(3,725)	(19,757)
More Than 12 Months
Fair Value	497,613	379,520
Unrealized Losses	(78,603)	(71,259)
Total
Fair Value	606,905	614,008
Unrealized Losses	(82,328)	(91,016)
Mortgage Backed Securities - commercial
Less Than 12 Months
Fair Value	3,914	9,677
Unrealized Losses	(229)	(426)
More Than 12 Months
Fair Value	3,743
Unrealized Losses	(147)
Total
Fair Value	7,657	9,677
Unrealized Losses	(376)	(426)
Collateralized Mortgage Obligations
Less Than 12 Months
Fair Value	45,547	135,135
Unrealized Losses	(1,898)	(11,331)
More Than 12 Months
Fair Value	140,526	63,792
Unrealized Losses	(21,047)	(13,588)
Total
Fair Value	186,073	198,927
Unrealized Losses	(22,945)	(24,919)
State and municipal obligations
Less Than 12 Months
Fair Value	91,667	233,439
Unrealized Losses	(1,808)	(24,291)
More Than 12 Months
Fair Value	157,646	41,510
Unrealized Losses	(30,744)	(12,823)
Total
Fair Value	249,313	274,949
Unrealized Losses	(32,552)	(37,114)
Municipal taxable
Less Than 12 Months
Fair Value	873	18,637
Unrealized Losses	(22)	(3,706)
More Than 12 Months
Fair Value	30,839	12,837
Unrealized Losses	(5,833)	(3,141)
Total
Fair Value	31,712	31,474
Unrealized Losses	(5,855)	(6,847)
U.S. Treasury
Less Than 12 Months
Fair Value	2,264	2,944
Unrealized Losses	(21)	(35)
Total
Fair Value	2,264	2,944
Unrealized Losses	$ (21)	$ (35)

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