Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details)

v3.8.0.1
Commitments and Contingencies (Details)
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Revenue | Customer concentration    
Certain Risks and Concentrations    
Concentration Risk, Percentage 72.00% 67.00%