Premises and Equipment - Schedule of Premises and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Land and improvements	$ 55,674	$ 57,817
Buildings and improvements	209,573	216,593
Furniture and equipment	115,162	111,259
Total cost	380,409	385,669
Accumulated depreciation and amortization	(218,022)	(212,733)
Right of use assets	71,184	47,956
Total premises and equipment, net	$ 233,571	$ 220,892