Quarterly report pursuant to Section 13 or 15(d)

Credit Risk and Concentrations (Details)

v3.8.0.1
Credit Risk and Concentrations (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Concentration Risk [Line Items]    
Net revenues $ 2,095 $ 13,481
Customer concentration risk [Member] | Customer A [Member]    
Concentration Risk [Line Items]    
Net revenues $ 512
Concentration risk, percentage 24.00%
Customer concentration risk [Member] | Customer B [Member]    
Concentration Risk [Line Items]    
Net revenues $ 325
Concentration risk, percentage 16.00%
Customer concentration risk [Member] | Customer C [Member]    
Concentration Risk [Line Items]    
Net revenues $ 211
Concentration risk, percentage 10.00%
Customer concentration risk [Member] | Customer D [Member]    
Concentration Risk [Line Items]    
Net revenues $ 1,616
Concentration risk, percentage 12.00%