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Significant Customer Concentration (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Concentration Risk Percentage [Abstract]        
Revenues, net $ 7,480 $ 7,729 $ 22,688 $ 21,856
Revenue [Member] | Customer Concentration Risk [Member]        
Concentration Risk Percentage [Abstract]        
Revenues, net $ 1,050 $ 2,113 $ 4,407 $ 5,379
Concentration risk percentage 14.00% 27.00% 19.00% 25.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member]        
Concentration Risk Percentage [Abstract]        
Accounts receivable $ 736   $ 736  
Concentration risk percentage     20.00%