Annual report pursuant to Section 13 and 15(d)

Schedule of Stock-based Compensation (Details)

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Schedule of Stock-based Compensation (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total $ 3,472 $ 2,905
Research and Development Expense [Member]    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total 575 588
Selling, General and Administrative Expenses [Member]    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total 353 340
General and Administrative Expense [Member]    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total $ 2,544 $ 1,977