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Property And Equipment (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Property and equipment, gross $ 43,657 $ 43,419
Accumulated depreciation (22,577) (22,044)
Total property and equipment   21,375
Office Equipment [Member]    
Property and equipment, gross 709 709
Buildings And improvements [Member]    
Property and equipment, gross 16,410 16,387
Construction In Progress [Member]    
Property and equipment, gross 335 311
Land [Member]    
Property and equipment, gross 1,807 1,807
Machinery And Equipment [Member]    
Property and equipment, gross 23,193 22,907
Vehicles [Member]    
Property and equipment, gross $ 1,203 $ 1,298