Premises and Equipment, Net - Premises and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Premises and Equipment, Net, by Type [Abstract]
Total cost of premises and equipment	$ 516,545	$ 490,213
Less accumulated depreciation and amortization	288,956	282,385
Premises and equipment, net	227,589	207,828
Finance lease right-of-use assets	3,751	4,537
Assets held for sale	1,197	0
Total premises and equipment, net	232,537	212,365
Land [Member]
Premises and Equipment, Net, by Type [Abstract]
Total cost of premises and equipment	56,747	54,300
Building and Leasehold Improvements [Member]
Premises and Equipment, Net, by Type [Abstract]
Total cost of premises and equipment	247,173	237,215
Furniture and Equipment [Member]
Premises and Equipment, Net, by Type [Abstract]
Total cost of premises and equipment	$ 212,625	$ 198,698