Securities - Schedule of Unrealized Loss and Fair Value on Investments (Details) $ in Thousands	Dec. 31, 2023 USD ($) security	Dec. 31, 2022 USD ($) security
Fair Value
Less Than 12 Months	$ 215,988	$ 1,058,561
12 Months or Longer	1,453,668	753,961
Total	1,669,656	1,812,522
Unrealized Losses
Less Than 12 Months	(11,128)	(73,965)
12 Months or Longer	(206,586)	(174,697)
Total	$ (217,714)	$ (248,662)
Number of individual securities | security	504	420
Residential mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Fair Value
Less Than 12 Months	$ 91,867	$ 304,732
12 Months or Longer	826,324	645,115
Total	918,191	949,847
Unrealized Losses
Less Than 12 Months	(9,320)	(33,401)
12 Months or Longer	(174,832)	(162,870)
Total	(184,152)	(196,271)
Collateralized loan obligations
Fair Value
Less Than 12 Months	60,087	242,370
12 Months or Longer	232,545	60,534
Total	292,632	302,904
Unrealized Losses
Less Than 12 Months	(223)	(8,343)
12 Months or Longer	(1,188)	(1,908)
Total	(1,411)	(10,251)
Commercial mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Fair Value
Less Than 12 Months	24,251	341,920
12 Months or Longer	262,666	22,404
Total	286,917	364,324
Unrealized Losses
Less Than 12 Months	(1,270)	(21,555)
12 Months or Longer	(18,295)	(5,257)
Total	(19,565)	(26,812)
Private mortgage-backed securities and collateralized mortgage obligations
Fair Value
Less Than 12 Months	3,945	130,488
12 Months or Longer	119,475	25,234
Total	123,420	155,722
Unrealized Losses
Less Than 12 Months	(69)	(8,255)
12 Months or Longer	(10,842)	(4,576)
Total	(10,911)	(12,831)
U.S. Treasury securities and obligations of U.S. government agencies
Fair Value
Less Than 12 Months	24,933	3,788
12 Months or Longer	3,594	249
Total	28,527	4,037
Unrealized Losses
Less Than 12 Months	(143)	(328)
12 Months or Longer	(335)	(11)
Total	(478)	(339)
Other debt securities
Fair Value
Less Than 12 Months	10,579	11,459
12 Months or Longer	0	0
Total	10,579	11,459
Unrealized Losses
Less Than 12 Months	(101)	(427)
12 Months or Longer	0	0
Total	(101)	(427)
Obligations of state and political subdivisions
Fair Value
Less Than 12 Months	326	23,804
12 Months or Longer	9,064	425
Total	9,390	24,229
Unrealized Losses
Less Than 12 Months	(2)	(1,656)
12 Months or Longer	(1,094)	(75)
Total	$ (1,096)	$ (1,731)