Annual report pursuant to Section 13 and 15(d)

Share-based compensation - Options Granted to Nonemployees (Details)

v3.6.0.2
Share-based compensation - Options Granted to Nonemployees (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Dec. 31, 2015
Dec. 31, 2016
Jun. 30, 2015
Jun. 30, 2014
Share based compensation        
Number of options granted outstanding (in shares) 31,203,477 49,237,290    
Nonemployees        
Share based compensation        
Number of options granted outstanding (in shares) 2,774,600 3,074,600 2,774,600  
Share based payment charge (benefit) $ (33) $ (488) $ 2,001 $ 44