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Significant Customer Concentration (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Concentration Risk [Abstract]        
Revenues, net $ 5,613 $ 7,480 $ 16,373 $ 22,688
Revenue [Member] | Customer Concentration Risk [Member] | International Master Distributor [Member]        
Concentration Risk [Abstract]        
Revenues, net $ 846 $ 1,050 $ 2,149 $ 4,407
Concentration risk percentage 15.10% 14.00% 13.10% 19.00%
Revenue [Member] | Customer Concentration Risk [Member] | Japanese Distributor [Member]        
Concentration Risk [Abstract]        
Revenues, net $ 632      
Concentration risk percentage 11.30%