| Note 5 - Inventories (Details Textual) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022 | 
|---|---|---|
| Floor Plan Obligations | $ 1,213 | $ 1,211 | 
| Truck Floor Plan Inventories, Net | $ 1,213 | $ 1,211 | 
| X | ||||||||||
| 
- Definition Represents floor plan obligations. No definition available. 
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| X | ||||||||||
| 
- Definition Represents truck floor plan inventories net. No definition available. 
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