Property and Equipment - Schedule of Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	$ 24,441	$ 22,471
Accumulated depreciation and amortization	(17,216)	(16,012)
Property and equipment, net	7,225	6,459
Land and Office Building [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	8,108	7,937
Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	6,639	6,177
Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	9,258	8,042
Automobiles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	74	74
Finance Lease Right-of-use Assets [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, Gross	$ 362	$ 241