Property and Equipment, Net - Schedule of Property and Equipment, Net (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Total, at cost	$ 48,821	$ 40,376
Less: accumulated depreciation and amortization	(16,403)	(14,647)
Property and equipment, net	32,418	25,729
Land [Member]
Property, Plant and Equipment [Line Items]
Total, at cost	2,582	2,582
Building [Member]
Property, Plant and Equipment [Line Items]
Total, at cost	9,599	9,599
Software in progress [Member]
Property, Plant and Equipment [Line Items]
Total, at cost	14,081	6,884
Computer Hardware and Software [Member]
Property, Plant and Equipment [Line Items]
Total, at cost	9,962	8,851
Office Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Total, at cost	1,484	1,381
Tenant and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total, at cost	10,519	10,485
Vehicle Fleet [Member]
Property, Plant and Equipment [Line Items]
Total, at cost	$ 594	$ 594