Schedule of Stock Based Compensation Expense (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||
| Total stock-based compensation expense | $ 3,519 | $ 2,227 |
| Research and Development Expense [Member] | ||
| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||
| Total stock-based compensation expense | 833 | 464 |
| General and Administrative Expense [Member] | ||
| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||
| Total stock-based compensation expense | $ 2,686 | $ 1,763 |