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SEGMENT INFORMATION - Schedule of Segment Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Revenues by Segment | $ 3,283,499 | $ 3,289,978 | $ 2,734,372
Operating Income (Loss) by Segment | 176,416 | 323,076 | 309,146
Depreciation and Amortization by Segment | 299,509 | 279,923 | 267,700
Subtotal |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues by Segment | 3,301,189 | 3,295,196 | 2,735,271
Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues by Segment | 1,883 | 1,833 | 1,629
Operating Income (Loss) by Segment | (8,862) | (5,059) | (5,497)
Depreciation and Amortization by Segment | 1,328 | 1,908 | 2,912
Inter-segment eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues by Segment | (17,690) | (5,218) | (899)
Truckload Transportation Services | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues by Segment | 2,310,810 | 2,428,686 | 2,045,073
Operating Income (Loss) by Segment | 169,330 | 294,555 | 281,823
Depreciation and Amortization by Segment | 271,245 | 256,768 | 245,169
Werner Logistics | Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues by Segment | 910,433 | 793,492 | 622,461
Operating Income (Loss) by Segment | 15,879 | 36,184 | 27,873
Depreciation and Amortization by Segment | 15,395 | 9,989 | 8,833
Other | Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues by Segment | 78,063 | 71,185 | 66,108
Operating Income (Loss) by Segment | 69 | (2,604) | 4,947
Depreciation and Amortization by Segment | $ 11,541 | $ 11,258 | $ 10,786

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