Premises and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Right-of-use lease assets	$ 62,357	$ 46,845
Accumulated depreciation and amortization	(187,849)	(199,976)
Total premises and equipment, net	567,167	548,741
Land
Property, Plant and Equipment [Line Items]
Premises and equipment	122,858	122,841
Buildings and improvements
Property, Plant and Equipment [Line Items]
Premises and equipment	382,016	370,530
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment	109,576	122,029
Software
Property, Plant and Equipment [Line Items]
Premises and equipment	60,285	70,984
Construction in progress
Property, Plant and Equipment [Line Items]
Premises and equipment	$ 17,924	$ 15,488