XML 15 R33.htm IDEA: XBRL DOCUMENT v3.3.0.814
Stock Incentive Plans - Summary of Stock-Based Compensation Expense Recognized for Restricted Shares Stock Options and ESPP (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Stock-based compensation expense $ 766 $ 49 $ 2,245 $ 57
Research and development        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Stock-based compensation expense 324 17 1,260 21
General and administrative        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Stock-based compensation expense $ 442 $ 32 $ 985 $ 36