XML 52 R39.htm IDEA: XBRL DOCUMENT v3.19.3
Share-Based Compensation - Expense Summary (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total equity compensation expense $ 8,843 $ 7,054 $ 31,522 $ 20,873
Research and development expense        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total equity compensation expense 3,106 2,905 12,090 8,603
Selling, general, and administrative expense        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total equity compensation expense $ 5,737 $ 4,149 $ 19,432 $ 12,270