Investment Securities - Schedule of unrealized loss on investments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Investment [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 1,177,420	$ 767,401
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	63,796	6,422
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	413,070	73,431
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	58,980	3,092
Debt Securities, Available-for-sale, Unrealized Loss Position	1,590,490	840,832
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	122,776	9,514
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Investment [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	446,423	333,653
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	27,507	4,996
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	310,338	73,431
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	55,131	3,092
Debt Securities, Available-for-sale, Unrealized Loss Position	756,761	407,084
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	82,638	8,088
Obligations of States and Political Subdivisions
Investment [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	270,905	1,834
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	18,194	24
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position	270,905	1,834
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	18,194	24
Corporate Debt Securities
Investment [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	7,388	2,243
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	862	7
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,684	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	316	0
Debt Securities, Available-for-sale, Unrealized Loss Position	9,072	2,243
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	1,178	7
Collateralized Loan Obligations
Investment [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	415,491	429,671
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	15,446	1,395
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	101,048	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	3,533	0
Debt Securities, Available-for-sale, Unrealized Loss Position	516,539	429,671
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	18,979	$ 1,395
US Government-sponsored Enterprises Debt Securities
Investment [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	37,213
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,787
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Debt Securities, Available-for-sale, Unrealized Loss Position	37,213
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 1,787