XML 37 R25.htm IDEA: XBRL DOCUMENT v3.22.1
Stock-based Compensation (Tables)
3 Months Ended
Mar. 31, 2022
Share-based Payment Arrangement [Abstract]  
Summary of Stock-based Compensation Expense
The following table summarizes stock-based compensation expense related to stock options, restricted stock awards (RSAs) granted to employees, non-employee directors and consultants, and the 2019 Employee Stock Purchase Plan (the 2019 ESPP) included in the condensed consolidated statements of operations as follows (in thousands):
Three Months Ended March 31,
20222021
Research and development$175 $543 
Selling and marketing163 740 
General and administrative729 2,181 
Total$1,067 $3,464