Quarterly report pursuant to Section 13 or 15(d)

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

v3.7.0.1
Share-based compensation - Options Granted to Nonemployees (Details) - Nonemployees - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Share based compensation        
Number of options granted outstanding (in shares) 3,224,600   3,224,600  
Share based payment expense (benefit) $ (101) $ 199 $ 104 $ (114)