Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details)

v3.20.2
Stock-Based Compensation (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Stock-based compensation expense related to stock-based awards        
Total stock-based compensation expense $ 1,757 $ 2,653 $ 3,781 $ 5,606
Selling, general and administrative        
Stock-based compensation expense related to stock-based awards        
Total stock-based compensation expense 1,299 1,742 2,629 3,908
Research and development        
Stock-based compensation expense related to stock-based awards        
Total stock-based compensation expense $ 458 $ 911 $ 1,152 $ 1,698