Equipment and Improvements - Summary of Equipment and Improvements (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Equipment and improvements, gross	$ 14,556	$ 14,725
Less accumulated depreciation and amortization	(13,058)	(12,027)
Equipment and improvements, net	1,498	2,698
Computer hardware, software, and equipment
Property, Plant and Equipment [Line Items]
Equipment and improvements, gross	10,347	10,535
Leasehold improvements
Property, Plant and Equipment [Line Items]
Equipment and improvements, gross	3,381	3,378
Office furniture and fixtures
Property, Plant and Equipment [Line Items]
Equipment and improvements, gross	$ 828	$ 803

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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