Note 3 - Restructuring and Cost Savings Initiatives - Other Restructuring Gains and Charges (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Gain on disposal of terminals, net	$ 3,799	$ 7,677
Amortization of Intangible Assets, Total	$ 4,000	5,100
Total restructuring		3,493
Highway Services and Dedicated [Member] \| Gain on Disposition of Property and Equipment, Net [Member]
Gain on disposal of terminals, net		(4,740)
Abandonment		1,048
Highway Services and Dedicated [Member] \| Revenue Equipment Rentals and Purchased Transportation [Member]
Abandonment		825
Highway Services and Dedicated [Member] \| General Supplies and Expenses [Member]
Contract exit costs and restructuring related costs and professional fees		695
Highway Services, Dedicated, and Managed Freight [Member] \| Salaries Wages And Related Expenses [Member]
Restructuring related separation and other		4,334
Dedicated and Managed Freight [Member] \| Depreciation and Amortization [Member]
Amortization of Intangible Assets, Total		$ 1,331

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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