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Property And Equipment (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Property and equipment, gross $ 43,989 $ 43,419
Accumulated depreciation (22,386) (22,044)
Total property and equipment 21,603 21,375
Land [Member]    
Property and equipment, gross 1,747 1,807
Buildings And improvements [Member]    
Property and equipment, gross 16,387 16,387
Machinery And Equipment [Member]    
Property and equipment, gross 22,533 22,907
Vehicles [Member]    
Property and equipment, gross 848 1,298
Office Equipment [Member]    
Property and equipment, gross 709 709
Construction In Progress [Member]    
Property and equipment, gross $ 1,765 $ 311