Deposits - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deposits [Abstract]
Deposits	$ 20,828,124	$ 22,666,039
Brokered deposits	10,100,000	11,900,000
Retail and other deposits	10,700,000	10,800,000
Aggregate of deposits of individual depositors	7,300,000	7,100,000
Brokered deposit placement fee	16,000	19,000	$ 18,000
Third party broker fees paid	13,000	5,000	$ 28,000
Deposits exceeding FDIC insurance limits	743,000	571,000
Accrued interest on deposits	$ 35,000	$ 50,000