Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Construction in progress	$ 1,032	$ 3,122
Land	100	100
Property plant and equipment gross	138,230	127,882
Less: accumulated depreciation and amortization	(112,468)	(104,817)
Total	25,762	23,065
Machinery, Furniture and Equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	106,525	91,282
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	29,803	32,591
Building and Improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 770	$ 787

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 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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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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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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