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Note 5 - Segment Information - Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Revenue | $ 266,851 | $ 291,585
Operating income | 17,632 | 23,847
Operating Segments [Member] |  |
Revenue | 266,851 | 291,585
Operating income | 17,632 | 23,847
Intersegment Eliminations [Member] |  |
Revenue | 4,462 | 2,494
Consolidation, Eliminations [Member] |  |
Revenue | (4,462) | (2,494)
Highway Services [Member] | Operating Segments [Member] |  |
Revenue | 100,896 | 98,797
Operating income | 9,276 | 9,331
Highway Services [Member] | Intersegment Eliminations [Member] |  |
Revenue | 4,462 | 2,494
Dedicated [Member] | Operating Segments [Member] |  |
Revenue | 80,244 | 88,947
Operating income | 7,147 | 2,641
Dedicated [Member] | Intersegment Eliminations [Member] |  |
Revenue | 0 | 0
Managed Freight [Member] | Operating Segments [Member] |  |
Revenue | 60,874 | 86,151
Operating income | 1,218 | 10,831
Managed Freight [Member] | Intersegment Eliminations [Member] |  |
Revenue | 0 | 0
Factoring [Member] | Operating Segments [Member] |  |
Revenue | 24,837 | 17,690
Operating income | (9) | 1,044
Factoring [Member] | Intersegment Eliminations [Member] |  |
Revenue | $ 0 | $ 0

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