Premises and Equipment - Summary of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Premises and Equipment [Line Items]
Total Cost	$ 312,644	$ 316,548
Accumulated Depreciation and Amortization	(206,989)	(205,486)
Net	105,655	111,062
Land
Premises and Equipment [Line Items]
Total Cost	22,349	25,619
Buildings and Leasehold Improvements
Premises and Equipment [Line Items]
Total Cost	160,410	163,588
Equipment
Premises and Equipment [Line Items]
Total Cost	$ 129,885	$ 127,341