Quarterly report pursuant to Section 13 or 15(d)

Customer Concentration (Details)

v3.7.0.1
Customer Concentration (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Revenue [Member] | Major customers [Member]        
Concentration Risk [Line Items]        
Concentration risk, percentage 69.00% 57.00% 68.00% 60.00%