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Note 5 - Segment Information - Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Revenue | $ 287,497 | $ 274,016 | $ 566,260 | $ 540,867
Operating income | 15,577 | 11,783 | 19,912 | 29,415
Operating Segments [Member] |  |  |  |
Revenue | 287,497 | 274,016 | 566,260 | 540,867
Operating income | 15,577 | 11,783 | 19,912 | 29,415
Intersegment Eliminations [Member] |  |  |  |
Revenue | 886 | 3,915 | 1,527 | 8,377
Consolidation, Eliminations [Member] |  |  |  |
Revenue | (886) | (3,915) | (1,527) | (8,377)
Highway Services [Member] | Operating Segments [Member] |  |  |  |
Revenue | 108,010 |  | 213,481 |
Operating income | 4,768 |  | 9,552 |
Highway Services [Member] | Intersegment Eliminations [Member] |  |  |  |
Revenue | 886 |  | 1,527 |
Dedicated [Member] | Operating Segments [Member] |  |  |  |
Revenue | 93,465 | 81,194 | 177,947 | 161,438
Operating income | 5,450 | 3,243 | 753 | 10,390
Dedicated [Member] | Intersegment Eliminations [Member] |  |  |  |
Revenue | 0 | 0 | 0 | 0
Managed Freight [Member] | Operating Segments [Member] |  |  |  |
Revenue | 60,366 | 63,281 | 123,283 | 124,155
Operating income | 3,330 | 1,945 | 5,599 | 3,163
Managed Freight [Member] | Intersegment Eliminations [Member] |  |  |  |
Revenue | 0 | 0 | 0 | 0
Factoring [Member] | Operating Segments [Member] |  |  |  |
Revenue | 25,656 |  | 51,549 |
Operating income | 2,029 |  | 4,008 |
Factoring [Member] | Intersegment Eliminations [Member] |  |  |  |
Revenue | $ 0 |  | $ 0 |
Expedited [Member] | Operating Segments [Member] |  |  |  |
Revenue |  | 104,073 |  | 204,969
Operating income |  | 5,815 |  | 15,091
Expedited [Member] | Intersegment Eliminations [Member] |  |  |  |
Revenue |  | 3,915 |  | 8,377
Warehousing [Member] | Operating Segments [Member] |  |  |  |
Revenue |  | 25,468 |  | 50,305
Operating income |  | 780 |  | 771
Warehousing [Member] | Intersegment Eliminations [Member] |  |  |  |
Revenue |  | $ 0 |  | $ 0

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