Premises and Equipment - Summary of Premises and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Gross premises and equipment	$ 189,963	$ 186,253
Less: Accumulated depreciation	102,668	89,697
Net premises and equipment	87,295	96,556
Depreciation expense of premises and equipment	15,410	14,999	$ 15,852
Land
Property, Plant and Equipment [Line Items]
Gross premises and equipment	18,469	20,209
Buildings
Property, Plant and Equipment [Line Items]
Gross premises and equipment	34,481	35,343
Leasehold improvements
Property, Plant and Equipment [Line Items]
Gross premises and equipment	66,098	63,365
Furniture and equipment
Property, Plant and Equipment [Line Items]
Gross premises and equipment	70,915	67,336
Land, Buildings, Leasehold Improvements, Furniture and Equipment
Property, Plant and Equipment [Line Items]
Depreciation expense of premises and equipment	$ 13,500	$ 14,300	$ 15,000