Quarterly report pursuant to Section 13 or 15(d)

Loss per share (Details)

v3.10.0.1
Loss per share (Details) - shares
6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Share options    
Antidilutive securities    
Potentially dilutive equity instruments excluded from the diluted loss per share (in shares) 87,434,329 67,082,914