Investment Securities - Schedule of unrealized loss on investments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Investment [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 767,401	$ 86,393
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	6,422	695
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	73,431	4,727
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	3,092	33
Debt Securities, Available-for-sale, Unrealized Loss Position	840,832	91,120
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	9,514	728
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	333,653	86,393
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	4,996	695
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	73,431	4,727
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	3,092	33
Debt Securities, Available-for-sale, Unrealized Loss Position	407,084	91,120
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	8,088	$ 728
Obligations of States and Political Subdivisions
Investment [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	1,834
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	24
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	1,834
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	24
Corporate Debt Securities
Investment [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	2,243
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	7
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	2,243
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	7
Collateralized Loan Obligations
Investment [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	429,671
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,395
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	429,671
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 1,395