Quarterly report pursuant to Section 13 or 15(d)

Schedule of Stock-based Compensation (Details)

v3.22.1
Schedule of Stock-based Compensation (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total $ 521 $ 919
Research and Development Expense [Member]    
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total 97 134
Selling, General and Administrative Expenses [Member]    
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total 58 117
General and Administrative Expense [Member]    
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total $ 366 $ 668