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Note 5 - Segment Information - Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Revenue | $ 311,839 | $ 274,561 | $ 920,801 | $ 751,775
Operating income | 59,059 | 20,083 | 109,779 | 48,925
Operating Segments [Member] |  |  |  |
Revenue | 311,839 | 274,561 | 920,801 | 751,775
Operating income | 59,059 | 20,083 | 109,779 | 48,925
Intersegment Eliminations [Member] |  |  |  |
Revenue | 1,580 | 2,494 | 3,476 | 4,674
Consolidation, Eliminations [Member] |  |  |  |
Revenue | (1,580) | (2,494) | (3,476) | (4,674)
Highway Services [Member] | Operating Segments [Member] |  |  |  |
Revenue | 117,793 | 85,289 | 338,234 | 251,139
Operating income | 30,660 | 11,064 | 54,602 | 27,479
Highway Services [Member] | Intersegment Eliminations [Member] |  |  |  |
Revenue | 1,580 | 2,494 | 3,476 | 4,674
Dedicated [Member] | Operating Segments [Member] |  |  |  |
Revenue | 93,423 | 83,477 | 279,136 | 240,791
Operating income | 19,416 | (659) | 24,937 | (2,629)
Dedicated [Member] | Intersegment Eliminations [Member] |  |  |  |
Revenue | 0 | 0 | 0 | 0
Managed Freight [Member] | Operating Segments [Member] |  |  |  |
Revenue | 78,382 | 90,072 | 244,814 | 213,104
Operating income | 8,605 | 9,251 | 28,062 | 21,510
Managed Freight [Member] | Intersegment Eliminations [Member] |  |  |  |
Revenue | 0 | 0 | 0 | 0
Factoring [Member] | Operating Segments [Member] |  |  |  |
Revenue | 22,241 | 15,723 | 58,617 | 46,741
Operating income | 378 | 427 | 2,178 | 2,565
Factoring [Member] | Intersegment Eliminations [Member] |  |  |  |
Revenue | $ 0 | $ 0 | $ 0 | $ 0

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