Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation - Summary of Share-based Compensation Expense (Details)

v3.21.2
Share-Based Compensation - Summary of Share-based Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Research and Development Expense        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Share-based compensation expense $ 169 $ 367 $ 178 $ 580
General and Administrative Expense        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Share-based compensation expense $ 390 $ 819 $ 662 $ 1,203