Deposits - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financial Services, Banking and Thrift [Abstract]
Time deposits, $250,000 or more	$ 861.5	$ 1,400.0
Interest expense on time deposits of $250 thousand or more	1.1	4.5	$ 5.8
Deposits from certain directors, executive officers and their affiliates	$ 92.3	$ 97.3