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Note 6 - Acquisition of Sims Transport Services, LLC (Details Textual) - USD ($) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Aug. 18, 2023 | Dec. 31, 2024 | Dec. 31, 2023
Goodwill |  | $ 78,941 | $ 75,747
Sims Transport Services, LLC [Member] |  |  |
Business Acquisition, Percentage of Voting Interests Acquired | 100.00% |  |
Business Combination, Consideration Transferred | $ 9,833 |  |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High | $ 12,000 |  |
Business Combination, Contingent Consideration, Earnout Period (Year) | 4 years |  |
Goodwill, Measurement Period Adjustment |  | 1,600 |
Goodwill | $ 3,469 | $ 3,500 | $ 5,100
Sims Transport Services, LLC [Member] | Minimum [Member] |  |  |
Business Combination, Consideration Transferred | 9,800 |  |
Sims Transport Services, LLC [Member] | Maximum [Member] |  |  |
Business Combination, Consideration Transferred | $ 20,000 |  |

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