Quarterly report pursuant to Section 13 or 15(d)

Loss per share (Details)

v3.8.0.1
Loss per share (Details) - shares
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Share options        
Antidilutive securities        
Weighted average number of share options (in shares) 75,087,783 47,392,118 69,136,398 44,951,407