Premises and Equipment, Net - Premises and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Premises and Equipment, Net, by Type [Abstract]
Total cost of premises and equipment	$ 490,213	$ 467,235
Less accumulated depreciation and amortization	282,385	271,334
Premises and equipment, net	207,828	195,901
Finance lease right-of-use assets	4,537	6,017
Assets held for sale	0	3,726
Total premises and equipment, net	212,365	205,644
Land [Member]
Premises and Equipment, Net, by Type [Abstract]
Total cost of premises and equipment	54,300	54,342
Building and Leasehold Improvements [Member]
Premises and Equipment, Net, by Type [Abstract]
Total cost of premises and equipment	237,215	221,986
Furniture and Equipment [Member]
Premises and Equipment, Net, by Type [Abstract]
Total cost of premises and equipment	$ 198,698	$ 190,907