Premises and Equipment - Summary of Premises and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Less: Accumulated depreciation	$ (65,154)	$ (61,657)
Premises and equipment, net	71,347	72,327
Depreciable premises and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	135,483	132,767
Premises and equipment, net	70,329	71,110
Land and land improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	26,032	25,899
Buildings
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	65,467	64,018
Furniture and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	43,984	42,850
Construction in progress
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 1,018	$ 1,217