Fair Value - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Outstanding balances in collateral dependent related to allowance for credit losses	$ 40,700		$ 43,400
Collateral dependent related to allowance for credit losses	9,500		4,400
Foreclosed assets remeasured after initial recognition	521	$ 3,100
Write-downs of allowance for foreclosed assets after initial recognition	47	357
Noninterest gain (loss) Mortgage banking, net for changes in fair value of LHFS	(10,600)	7,700
Interest earned on LHFS included in Interest and fees on LHFS and LHFI	2,100	$ 1,300
Serviced GNMA loans eligible for repurchase	$ 123,400		$ 141,200