XML 41 R30.htm IDEA: XBRL DOCUMENT v3.5.0.2
Stock-Based Compensation - Stock-Based Compensation Expense (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Total stock-based compensation expense $ 7,199 $ 2,883 $ 10,393 $ 5,836
Research and development [Member]        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Total stock-based compensation expense 1,728 1,734 3,578 3,425
General and administrative [Member]        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Total stock-based compensation expense $ 5,471 $ 1,149 $ 6,815 $ 2,411