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v3.20.4

Segment Information (Summary Of 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
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 620,302 | $ 590,214 | $ 568,959 | $ 592,703 | $ 621,787 | $ 618,264 | $ 627,533 | $ 596,117 | $ 2,372,178 | $ 2,463,701 | $ 2,457,914
Operating income | $ 81,451 | $ 62,103 | $ 52,818 | $ 31,066 | $ 65,654 | $ 53,357 | $ 58,442 | $ 48,019 | 227,438 | 225,472 | 224,215
Truckload Transportation Services |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 1,843,209 | 1,909,776 | 1,881,323
Operating income |  |  |  |  |  |  |  |  | 222,007 | 202,660 | 202,581
Werner Logistics |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 469,791 | 489,729 | 518,078
Operating income |  |  |  |  |  |  |  |  | 6,005 | 16,288 | 20,378
Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 57,276 | 61,850 | 56,903
Operating income |  |  |  |  |  |  |  |  | 3,839 | 5,535 | (453)
Corporate |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 2,009 | 2,589 | 2,759
Operating income |  |  |  |  |  |  |  |  | (4,413) | 989 | 1,709
Subtotal |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 2,372,285 | 2,463,944 | 2,459,063
Inter-segment eliminations |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ (107) | $ (243) | $ (1,149)

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