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Segment Reporting and Concentrations (Details 1) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Segment Reporting Information [Line Items]        
Revenues $ 15,135 $ 14,804 $ 43,000 $ 43,184
Other - principally Europe        
Segment Reporting Information [Line Items]        
Revenues 1,354 1,452 4,179 3,977
United States        
Segment Reporting Information [Line Items]        
Revenues 7,275 7,424 20,478 23,169
United Kingdom        
Segment Reporting Information [Line Items]        
Revenues 2,520 2,540 6,771 7,824
The Netherlands        
Segment Reporting Information [Line Items]        
Revenues 2,514 2,404 7,274 6,520
Canada        
Segment Reporting Information [Line Items]        
Revenues $ 1,472 $ 984 $ 4,298 $ 1,694