XML 63 R52.htm IDEA: XBRL DOCUMENT v3.7.0.1
Share-Based Compensation - Allocation of Share-based Compensation Expense on Statements of Operations (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Total share-based compensation expense $ 595 $ 42 $ 1,014 $ 84
Research and development        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Total share-based compensation expense 257 5 380 17
General and administrative        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Total share-based compensation expense $ 338 $ 37 $ 634 $ 67