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Note 1 - Significant Accounting Policies - Segment By Operating Fleet Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Total revenue | $ 243,303 | $ 178,631 | $ 613,187 | $ 501,701
Truckload [Member] |  |  |  |
Total revenue | 197,053 | 153,066 | 522,312 | 446,322
Truckload [Member] | Covenant Transport, Inc. [Member] |  |  |  |
Total revenue | 108,223 | 95,100 | 309,583 | 272,387
Truckload [Member] | Southern Refrigerated Transport, Inc. [Member] |  |  |  |
Total revenue | 47,866 | 41,382 | 134,163 | 123,905
Truckload [Member] | Star Transportation Inc [Member] |  |  |  |
Total revenue | 19,887 | 16,584 | 57,489 | 50,030
Truckload [Member] | Landair [Member] |  |  |  |
Total revenue | 21,077 |  | 21,077 |
Managed Freight [Member] |  |  |  |
Total revenue | $ 46,250 | $ 25,565 | $ 90,875 | $ 55,379

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- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 + Details
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