Securities - Schedule of Unrealized Loss and Fair Value on Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair Value
Less Than 12 Months	$ 1,058,560	$ 1,113,319
12 Months or Longer	753,962	31,287
Total	1,812,522	1,144,606
Unrealized Losses
Less Than 12 Months	(73,965)	(19,831)
12 Months or Longer	(174,697)	(1,026)
Total	(248,662)	(20,857)
U.S. Treasury securities and obligations of U.S. government agencies
Fair Value
Less Than 12 Months	3,788	97
12 Months or Longer	249	245
Total	4,037	342
Unrealized Losses
Less Than 12 Months	(328)	(1)
12 Months or Longer	(11)	(2)
Total	(339)	(3)
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities
Fair Value
Less Than 12 Months	646,651	955,881
12 Months or Longer	667,520	11,953
Total	1,314,171	967,834
Unrealized Losses
Less Than 12 Months	(54,956)	(19,575)
12 Months or Longer	(168,127)	(734)
Total	(223,083)	(20,309)
Private mortgage-backed securities and collateralized mortgage obligations
Fair Value
Less Than 12 Months	130,488	33,640
12 Months or Longer	25,234	9,628
Total	155,722	43,268
Unrealized Losses
Less Than 12 Months	(8,255)	(173)
12 Months or Longer	(4,576)	(247)
Total	(12,831)	(420)
Collateralized loan obligations
Fair Value
Less Than 12 Months	242,370	123,202
12 Months or Longer	60,534	9,461
Total	302,904	132,663
Unrealized Losses
Less Than 12 Months	(8,343)	(81)
12 Months or Longer	(1,908)	(43)
Total	(10,251)	(124)
Obligations of state and political subdivisions
Fair Value
Less Than 12 Months	23,804	499
12 Months or Longer	425	0
Total	24,229	499
Unrealized Losses
Less Than 12 Months	(1,656)	(1)
12 Months or Longer	(75)	0
Total	(1,731)	$ (1)
Other debt securities
Fair Value
Less Than 12 Months	11,459
12 Months or Longer	0
Total	11,459
Unrealized Losses
Less Than 12 Months	(427)
12 Months or Longer	0
Total	$ (427)