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Segment Reporting and Concentrations (Details 1) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Segment Reporting Information [Line Items]        
Revenues $ 16,060 $ 15,135 $ 47,400 $ 43,000
Other - principally Europe        
Segment Reporting Information [Line Items]        
Revenues 1,883 1,354 4,828 4,179
United States        
Segment Reporting Information [Line Items]        
Revenues 8,263 7,275 24,614 20,478
The Netherlands        
Segment Reporting Information [Line Items]        
Revenues 2,006 2,514 7,096 7,274
United Kingdom        
Segment Reporting Information [Line Items]        
Revenues 2,417 2,520 6,397 6,771
Canada        
Segment Reporting Information [Line Items]        
Revenues $ 1,491 $ 1,472 $ 4,465 $ 4,298