Supplementary Information - Summary of Property and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 97,046	$ 98,581
Less: accumulated depreciation and amortization	57,676	58,103
Property and equipment, net	39,370	40,478
Land [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	9,728	9,888
Building and Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	18,002	18,358
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	46,092	45,027
Furniture Equipment and Other [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	12,445	12,947
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	8,746	9,829
Right-of-Use Assets Under Finance Leases [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 2,033	$ 2,532