Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation, Share-Based Compensation Expense (Details)

v3.22.2
Stock-based Compensation, Share-Based Compensation Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Stock-based Compensation Expense [Abstract]        
Stock-based compensation $ 445 $ 463 $ 890 $ 957
General and Administrative [Member]        
Stock-based Compensation Expense [Abstract]        
Stock-based compensation 276 288 571 481
Research and Development [Member]        
Stock-based Compensation Expense [Abstract]        
Stock-based compensation $ 169 $ 175 $ 319 $ 476