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Note 6 - Goodwill and Intangible Assets - Schedule of Goodwill (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 USD ($)
Goodwill | $ 22,985
Goodwill | 53,684
Park Environmental Equipment, LLC [Member] |
Acquisition of ParkUSA (Note 3) | $ 30,699

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