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Note 11 - Equity Method Investment - TEL's Summarized Financial Information (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Operating lease obligations	$ 8,959	$ 11,950
Transport Enterprise Leasing LLC [Member]
Operating lease obligations	74	4,100
Transport Enterprise Leasing LLC [Member] | Driver Advances and Other Receivable [Member]
Accounts receivable from TEL	79	37
Transport Enterprise Leasing LLC [Member] | Accrued Expenses [Member]
Accounts payable to TEL	35	460
Transport Enterprise Leasing LLC [Member] | Other Assets [Member]
Investment in TEL	$ 70,005	$ 66,327

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