Note 5 - Inventories, Net (Details Textual) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Inventory Write-down | $ 0 | $ (68) |
| Product Line Exit Costs [Member] | ||
| Inventory Write-down | $ 621 | |
| Raw Materials and Scrap Parts [Member] | ||
| Inventory Write-down | $ (68) | |