Property and Equipment (Property and Equipment) (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Leasehold Improvements, Gross	$ 350	$ 322
Machinery and Equipment, Gross	1,749	1,669
Computer and office equipment	9,991	9,451
Furniture and Fixtures, Gross	175	162
Capital Leased Assets, Gross	6,652	6,529
Property, Plant and Equipment, Other, Gross	67	67
Property, Plant and Equipment, Gross	18,984	18,200
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(17,058)	(14,203)
Construction in Progress, Gross	3,594	3,390
Property, Plant and Equipment, Net	5,520	7,387
Equipment [Member]
Property, Plant and Equipment [Line Items]
Depreciation	$ 2,900	$ 2,700	$ 2,300

Computer and office equipment

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- 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 of leased physical assets used in the normal conduct of business to produce goods and services.

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases.

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Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement.

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Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services 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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Amount before accumulated depreciation, depletion and amortization of other physical assets used in the normal conduct of business to produce goods and services and not intended for resale.

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