Premises and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Property, Plant and Equipment [Line Items]
Right-of-use lease assets	$ 48,493	$ 51,203
Accumulated depreciation and amortization	(253,167)	(246,580)
Total premises and equipment, net	557,873	561,220
Land
Property, Plant and Equipment [Line Items]
Premises and equipment	119,154	117,172
Buildings and improvements
Property, Plant and Equipment [Line Items]
Premises and equipment	432,013	417,866
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment	130,971	129,891
Software
Property, Plant and Equipment [Line Items]
Premises and equipment	66,185	65,702
Construction in progress
Property, Plant and Equipment [Line Items]
Premises and equipment	$ 14,224	$ 25,966