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Credit Risk and Concentrations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Concentration Risk [Line Items]    
Net revenues $ 3,756 $ 3,935
Customer concentration risk [Member] | Customer A [Member]    
Concentration Risk [Line Items]    
Net revenues $ 1,238
Concentration risk, percentage 33.00%
Customer concentration risk [Member] | Customer B [Member]    
Concentration Risk [Line Items]    
Net revenues $ 6,700
Concentration risk, percentage 15.00%