Premises and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Right-of-use lease assets	$ 49,308	$ 48,855
Accumulated depreciation and amortization	(194,610)	(171,144)
Total premises and equipment, net	549,932	483,469
Land
Property, Plant and Equipment [Line Items]
Premises and equipment	123,068	101,728
Buildings and improvements
Property, Plant and Equipment [Line Items]
Premises and equipment	366,773	320,844
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment	117,111	107,122
Software
Property, Plant and Equipment [Line Items]
Premises and equipment	67,515	66,947
Construction in progress
Property, Plant and Equipment [Line Items]
Premises and equipment	$ 20,767	$ 9,117