Quarterly report pursuant to Section 13 or 15(d)

Summary of significant accounting policies (Details 1)

v3.8.0.1
Summary of significant accounting policies (Details 1) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Jun. 30, 2017
Net loss $ (5,540,416) $ (3,395,721) $ (10,183,614) $ (5,468,666) $ (9,833,244)
Net loss per ordinary share:          
Basic (in dollars per share)         $ (0.58)
Previously Reported [Member]          
Net loss         $ (9,108,240)
Net loss per ordinary share:          
Basic (in dollars per share)         $ (0.54)
Revisions [Member]          
Net loss         $ (725,004)
Net loss per ordinary share:          
Basic (in dollars per share)         $ (0.04)