Annual report pursuant to Section 13 and 15(d)

Property and Equipment (Details)

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Property and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 57,095 $ 53,711
Accumulated depreciation (28,825) (27,057)
Property and equipment, net: 28,270 26,654
Buildings and leasehold improvements    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 1,404 1,222
Machinery and equipment    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 55,691 $ 52,489