Loans and Allowance for Credit Losses for Loans - Summary of Provision for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Receivables [Abstract]
(Credit) provision for loan losses	$ 27,507	$ 123,922	$ 25,809
Provision for unfunded credit commitments	5,389	1,165	(1,591)
Total provision for credit losses for loans	$ 32,896	$ 125,087	$ 24,218