Securities - Schedule of Unrealized Loss and Fair Value on Investments (Details) $ in Thousands	Jun. 30, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Fair Value
Less Than 12 Months	$ 331,366	$ 215,988
12 Months or Longer	1,230,724	1,453,668
Total	1,562,090	1,669,656
Unrealized Losses
Less Than 12 Months	(2,297)	(11,128)
12 Months or Longer	(225,785)	(206,586)
Total	$ (228,082)	$ (217,714)
Number of individual securities | security	504	414
U.S. Treasury securities and obligations of U.S. government agencies
Fair Value
Less Than 12 Months	$ 21,658	$ 24,933
12 Months or Longer	22,384	3,594
Total	44,042	28,527
Unrealized Losses
Less Than 12 Months	(34)	(143)
12 Months or Longer	(492)	(335)
Total	(526)	(478)
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Fair Value
Less Than 12 Months	254,312	91,867
12 Months or Longer	849,763	826,324
Total	1,104,075	918,191
Unrealized Losses
Less Than 12 Months	(2,037)	(9,320)
12 Months or Longer	(195,449)	(174,832)
Total	(197,486)	(184,152)
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Fair Value
Less Than 12 Months	16,902	24,251
12 Months or Longer	207,786	262,666
Total	224,688	286,917
Unrealized Losses
Less Than 12 Months	(96)	(1,270)
12 Months or Longer	(17,897)	(18,295)
Total	(17,993)	(19,565)
Private mortgage-backed securities and collateralized mortgage obligations
Fair Value
Less Than 12 Months	7,720	3,945
12 Months or Longer	108,756	119,475
Total	116,476	123,420
Unrealized Losses
Less Than 12 Months	(73)	(69)
12 Months or Longer	(10,560)	(10,842)
Total	(10,633)	(10,911)
Collateralized loan obligations
Fair Value
Less Than 12 Months	30,452	60,087
12 Months or Longer	36,583	232,545
Total	67,035	292,632
Unrealized Losses
Less Than 12 Months	(48)	(223)
12 Months or Longer	(34)	(1,188)
Total	(82)	(1,411)
Obligations of state and political subdivisions
Fair Value
Less Than 12 Months	323	326
12 Months or Longer	5,451	9,064
Total	5,774	9,390
Unrealized Losses
Less Than 12 Months	(9)	(2)
12 Months or Longer	(1,353)	(1,094)
Total	$ (1,362)	(1,096)
Other debt securities
Fair Value
Less Than 12 Months		10,579
12 Months or Longer		0
Total		10,579
Unrealized Losses
Less Than 12 Months		(101)
12 Months or Longer		0
Total		$ (101)