Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details)

v3.7.0.1
Commitments and Contingencies (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Certain Risks and Concentrations        
Percentage of total revenues     10.00%  
Revenue | Customer concentration        
Certain Risks and Concentrations        
Concentration Risk, Percentage 61.00% 61.00% 58.00% 68.00%