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Note 10 - Equity Method Investment (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Proceeds from Sale of Property, Plant, and Equipment			$ 17,054	$ 17,280
Income (Loss) from Equity Method Investments	$ 4,268	$ 4,094	8,044	$ 7,770	$ 8,044	$ 7,770
Transport Enterprise Leasing LLC [Member] | Revenue Equipment [Member]
Note Payable Assumed From Sale of Equipment		26,200	$ 9,000
Proceeds from Sale of Property, Plant, and Equipment		$ 500
Transport Enterprise Leasing LLC [Member]
Equity Method Investment, Ownership Percentage	49.00%		49.00%		49.00%
Income (Loss) from Equity Method Investments			$ 8,000

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Amount of note payable assumed from sale of equipment.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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