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Property and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 18,433	$ 18,344
Less: Accumulated depreciation and amortization	(15,956)	(15,597)
Property and equipment, net	2,477	2,747
Computer and Other Related Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	13,319	13,278
Purchased and Internally Developed Software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,106	2,058
Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,271	1,271
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,737	$ 1,737

X

- Definition

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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