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Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014
Property, plant and equipment |  |
Property, plant and equipment, gross | $ 13,384 | $ 14,742
Less: accumulated depreciation and amortization | 5,603 | 6,503
Property, plant and equipment gross, excluding land | 7,781 | 8,239
Land | 134 | 134
Property, plant and equipment, net | 7,915 | 8,373
Buildings and improvements |  |
Property, plant and equipment |  |
Property, plant and equipment, gross | $ 8,083 | 8,117
Buildings and improvements | Minimum |  |
Property, plant and equipment |  |
Property, plant and equipment, Estimated Useful Lives (years) | 15 years |
Buildings and improvements | Maximum |  |
Property, plant and equipment |  |
Property, plant and equipment, Estimated Useful Lives (years) | 25 years |
Office equipment and furniture |  |
Property, plant and equipment |  |
Property, plant and equipment, gross | $ 2,126 | 2,583
Office equipment and furniture | Minimum |  |
Property, plant and equipment |  |
Property, plant and equipment, Estimated Useful Lives (years) | 2 years |
Office equipment and furniture | Maximum |  |
Property, plant and equipment |  |
Property, plant and equipment, Estimated Useful Lives (years) | 7 years |
Automobiles and trucks |  |
Property, plant and equipment |  |
Property, plant and equipment, gross | $ 118 | 265
Automobiles and trucks | Minimum |  |
Property, plant and equipment |  |
Property, plant and equipment, Estimated Useful Lives (years) | 2 years |
Automobiles and trucks | Maximum |  |
Property, plant and equipment |  |
Property, plant and equipment, Estimated Useful Lives (years) | 5 years |
Machinery and shop equipment |  |
Property, plant and equipment |  |
Property, plant and equipment, gross | $ 2,963 | 3,349
Machinery and shop equipment | Minimum |  |
Property, plant and equipment |  |
Property, plant and equipment, Estimated Useful Lives (years) | 2 years |
Machinery and shop equipment | Maximum |  |
Property, plant and equipment |  |
Property, plant and equipment, Estimated Useful Lives (years) | 10 years |
Construction in Progress |  |
Property, plant and equipment |  |
Property, plant and equipment, gross | $ 94 | $ 428

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