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Significant Customer Concentration (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Concentration Risk Percentage [Abstract]        
Revenues, net $ 7,725 $ 7,388 $ 15,208 $ 14,126
Revenue [Member] | Customer Concentration Risk [Member]        
Concentration Risk Percentage [Abstract]        
Revenues, net $ 1,367 $ 1,955 $ 3,357 $ 3,266
Concentration risk percentage 18.00% 26.00% 22.00% 23.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member]        
Concentration Risk Percentage [Abstract]        
Accounts receivable $ 882   $ 882  
Concentration risk percentage     25.00%