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Note 3 - Details of Consolidated Balance Sheet Accounts - Prepaid Expenses and Other (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Insurance premiums | $ 2,356 | $ 1,831
Contract with Customer, Asset, Net, Current, Total | 1,729 | 1,823
Other | 3,166 | 2,971
| 20,938 | 19,924
License Fees Member [Member] |  |
Prepaid expenses | 5,321 | 4,760
Tires In Service [Member] |  |
Prepaid expenses | 4,972 | 5,011
Parts And Tires Inventory [Member] |  |
Prepaid expenses | $ 3,394 | $ 3,528

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