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Property and Equipment, Net (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Property Plant And Equipment [Line Items] |  |
Property and equipment - gross | $ 122,687 | $ 122,142
Less accumulated depreciation | (96,820) | (95,364)
Total property and equipment, net | 25,867 | 26,778
Land |  |
Property Plant And Equipment [Line Items] |  |
Property and equipment - gross | 875 | 875
Buildings |  |
Property Plant And Equipment [Line Items] |  |
Property and equipment - gross | $ 17,389 | 17,389
Buildings | Minimum |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Life (Years) | 39 years |
Buildings | Maximum |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Life (Years) | 40 years |
Building Improvements |  |
Property Plant And Equipment [Line Items] |  |
Property and equipment - gross | $ 37,543 | 37,543
Building Improvements | Minimum |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Life (Years) | 5 years |
Building Improvements | Maximum |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Life (Years) | 40 years |
Machinery and Equipment |  |
Property Plant And Equipment [Line Items] |  |
Property and equipment - gross | $ 55,054 | 54,982
Machinery and Equipment | Minimum |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Life (Years) | 3 years |
Machinery and Equipment | Maximum |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Life (Years) | 15 years |
Furniture, fixtures and office equipment |  |
Property Plant And Equipment [Line Items] |  |
Property and equipment - gross | $ 3,004 | 3,005
Furniture, fixtures and office equipment | Minimum |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Life (Years) | 5 years |
Furniture, fixtures and office equipment | Maximum |  |
Property Plant And Equipment [Line Items] |  |
Estimated Useful Life (Years) | 10 years |
Computer Equipment and Software |  |
Property Plant And Equipment [Line Items] |  |
Property and equipment - gross | $ 8,319 | 8,234
Estimated Useful Life (Years) | 3 years |
Construction in Progress |  |
Property Plant And Equipment [Line Items] |  |
Property and equipment - gross | $ 503 | $ 114

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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