Income Taxes (Schedule of Net Loss Before Income Taxes) (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Income Taxes [Abstract] | ||
| Domestic, current | $ (5,206) | $ (11,448) |
| Loss before provision for income taxes | $ (5,206) | $ (11,448) |