Premises and Equipment - Schedule of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Accumulated depreciation and amortization	$ (112,746)	$ (105,033)
Total	85,416	88,709
Land
Property, Plant and Equipment [Line Items]
Premise and equipment, gross	9,195	9,195
Premises and equipment
Property, Plant and Equipment [Line Items]
Premise and equipment, gross	105,164	104,027
Furniture, fixtures, and equipment
Property, Plant and Equipment [Line Items]
Premise and equipment, gross	$ 83,803	$ 80,520