Loans, Allowance for Credit Losses, and Asset Quality Information - Unfunded Loan Commitments (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 78,789	$ 52,388	$ 52,388
Charge-offs	(1,043)	(2,317)	(7,602)
Recoveries	823	1,203	4,922
Reversal of provision for unfunded commitments	3,500	0	9,611
Ending balance	82,069	$ 65,849	78,789
Unfunded Loan Commitment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	13,506
Charge-offs	0
Recoveries	0
Reversal of provision for unfunded commitments	(1,500)
Ending balance	$ 12,006		$ 13,506