Basis of Presentation, Description of Business and Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Federal Reserve Bank	$ 546,256	$ 100,711
Federal Home Loan Bank	5,582	13,785
Other	65,183	31,499
Total cash due from depository institutions	617,021	145,995
Cash on hand and noninterest bearing accounts	51,441	55,983
Total cash and cash equivalents	$ 668,462	$ 201,978