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Note 2 - Details of Consolidated Balance Sheet Accounts - Prepaid Expenses and Other (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Insurance premiums | $ 4,608 | $ 4,054
Contract assets | 2,106 | 2,746
Other | 3,971 | 3,734
Prepaid Expense and Other Assets, Current | 27,512 | 27,320
Parts And Tires Inventory [Member] |  |
Prepaid expenses | 6,286 | 5,427
License Fees Member [Member] |  |
Prepaid expenses | 5,557 | 6,029
Tires In Service [Member] |  |
Prepaid expenses | $ 4,984 | $ 5,330

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