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Note 15 - Segment Information - Segment Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Freight revenue | $ 1,046,003 | $ 838,561
Operating income (loss) | 67,162 | (14,027)
Operating Segments [Member] |  |
Freight revenue | 1,046,003 | 838,561
Operating income (loss) | 67,162 | (14,027)
Depreciation and amortization | 53,881 | 65,472
Intersegment Eliminations [Member] |  |
Freight revenue | 7,429 | 11,630
Consolidation, Eliminations [Member] |  |
Freight revenue | (7,429) | (11,630)
Highway Services [Member] | Operating Segments [Member] |  |
Freight revenue | 337,063 | 320,202
Operating income (loss) | 33,064 | (7,038)
Depreciation and amortization | 25,364 | 31,969
Highway Services [Member] | Intersegment Eliminations [Member] |  |
Freight revenue | 7,429 | 11,630
Dedicated [Member] |  |
Freight revenue | 324,541 | 288,652
Dedicated [Member] | Operating Segments [Member] |  |
Freight revenue | 324,541 | 288,652
Operating income (loss) | (1,357) | (15,534)
Depreciation and amortization | 25,960 | 29,610
Dedicated [Member] | Intersegment Eliminations [Member] |  |
Freight revenue | 0 | 0
Managed Freight [Member] |  |
Freight revenue | 321,236 | 177,579
Managed Freight [Member] | Operating Segments [Member] |  |
Freight revenue | 321,236 | 177,579
Operating income (loss) | 32,461 | 4,482
Depreciation and amortization | 595 | 829
Managed Freight [Member] | Intersegment Eliminations [Member] |  |
Freight revenue | 0 | 0
Factoring [Member] | Operating Segments [Member] |  |
Freight revenue | 63,163 | 52,128
Operating income (loss) | 2,994 | 4,063
Depreciation and amortization | 1,962 | 3,064
Factoring [Member] | Intersegment Eliminations [Member] |  |
Freight revenue | $ 0 | $ 0

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