Premises and Equipment, Net - Schedule of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 253,321	$ 238,099
Accumulated depreciation	(102,805)	(83,429)
Premises and equipment, net	150,516	154,670
Land and land improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	12,356	12,356
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	122,300	120,971
Furniture, fixtures, and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	29,955	28,272
Software
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 88,710	$ 76,500