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Note 15 - Segment Information - Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Revenue | $ 225,229 | $ 210,830 | $ 191,689 | $ 210,813 | $ 230,555 | $ 220,459 | $ 217,040 | $ 217,333 | $ 838,561 | $ 885,387 | $ 880,417
Operating (loss) income | $ 9,566 | $ 6,811 | $ (28,950) | $ (1,454) | $ 1,663 | $ (3,870) | $ 7,030 | $ 3,946 | (14,027) | 8,769 | 55,416
Dedicated [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 288,652 | 342,473 | 257,739
Managed Freight [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 177,579 | 138,616 | 129,790
Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 838,561 | 885,387 | 880,417
Operating (loss) income |  |  |  |  |  |  |  |  | (14,027) | 8,769 | 55,416
Depreciation and amortization |  |  |  |  |  |  |  |  | 65,472 | 80,502 | 75,843
Operating Segments [Member] | Highway Services [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 320,202 | 356,521 | 469,308
Operating (loss) income |  |  |  |  |  |  |  |  | (7,038) | (1,260) | 32,693
Depreciation and amortization |  |  |  |  |  |  |  |  | 31,969 | 39,371 | 44,564
Operating Segments [Member] | Dedicated [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 288,652 | 342,473 | 257,739
Operating (loss) income |  |  |  |  |  |  |  |  | (15,534) | 1,188 | 12,699
Depreciation and amortization |  |  |  |  |  |  |  |  | 29,610 | 38,716 | 30,604
Operating Segments [Member] | Managed Freight [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 177,579 | 138,616 | 129,790
Operating (loss) income |  |  |  |  |  |  |  |  | 4,482 | 3,323 | 7,150
Depreciation and amortization |  |  |  |  |  |  |  |  | 829 | 418 | 286
Operating Segments [Member] | Factoring [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 52,128 | 47,777 | 23,580
Operating (loss) income |  |  |  |  |  |  |  |  | 4,063 | 5,518 | 2,874
Depreciation and amortization |  |  |  |  |  |  |  |  | 3,064 | 1,997 | 389
Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 11,630 | 10,302 | 7,298
Intersegment Eliminations [Member] | Highway Services [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 11,630 | 10,302 | 7,298
Intersegment Eliminations [Member] | Dedicated [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0
Intersegment Eliminations [Member] | Managed Freight [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0
Intersegment Eliminations [Member] | Factoring [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 0 | 0 | 0
Consolidation, Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | $ (11,630) | $ (10,302) | $ (7,298)

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