Premises and Equipment - Year-End Premises and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 106,090	$ 60,061
Accumulated depreciation	(42,072)	(37,616)
Premises and equipment, net	64,018	22,445
Land and Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	7,919	6,970
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	35,138	29,305
Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 63,033	$ 23,786