Summary of Significant Accounting Policies - Property and Equipment and Other Capitalized Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 66,961	$ 55,765
Less: accumulated depreciation and amortization	(44,454)	(37,045)
Property and equipment, net	22,507	18,720
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,361	1,367
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	5,393	5,267
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,867	3,792
Internal-use Software and Website Development Costs [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 56,340	$ 45,339

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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