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Segment Reporting and Concentrations (Details 1) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Segment Reporting Information [Line Items]    
Revenues $ 15,698 $ 13,802
Other - principally Europe    
Segment Reporting Information [Line Items]    
Revenues 2,478 1,531
United States    
Segment Reporting Information [Line Items]    
Revenues 8,273 6,588
The Netherlands    
Segment Reporting Information [Line Items]    
Revenues 2,562 2,112
United Kingdom    
Segment Reporting Information [Line Items]    
Revenues 1,981 2,201
Canada    
Segment Reporting Information [Line Items]    
Revenues $ 404 $ 1,370