XML 50 R39.htm IDEA: XBRL DOCUMENT v3.19.1
Share based Compensation - Expense Summary (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total equity compensation expense $ 12,744 $ 7,478
Research and development expense    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total equity compensation expense 5,032 3,057
Selling, general and administrative expense    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total equity compensation expense $ 7,712 $ 4,421