Other Assets - Schedule of Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Federal Home Loan Bank of Des Moines and Federal Reserve Bank Stock	$ 36,624	$ 33,340
Derivative Financial Instruments	42,011	96,167
Low-Income Housing and Other Equity Investments	136,647	142,961
Deferred Compensation Plan Assets	56,411	53,410
Prepaid Expenses	17,670	14,517
Accounts Receivable	13,323	12,380
Deferred Tax Assets	42,277	16,724
Other	39,764	65,794
Total Other Assets	$ 384,727	$ 435,293