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Property, Plant and Equipment (Details 1) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 21,469 $ 20,200
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment (15,705) (15,010)
Property, plant and equipment, net 5,764 5,190
Land, Buildings and Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 2,619 2,595
Machinery and Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 10,172 10,102
Computer Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 7,300 6,322
Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 1,324 1,125
Automobiles [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 54 $ 56