XML 73 R61.htm IDEA: XBRL DOCUMENT v3.21.1
Stock-based Compensation - Summary of Stock-Based Compensation Included in Statement of Operations (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Stock-based compensation    
Total stock-based compensation expense $ 6,879 $ 4,951
Research and development expenses    
Stock-based compensation    
Total stock-based compensation expense 1,217 770
Selling, general and administrative expenses    
Stock-based compensation    
Total stock-based compensation expense $ 5,662 $ 4,181