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SEGMENT INFORMATION - Schedule of Segment Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | $ 2,955,201 | $ 3,203,553 | $ 3,216,960
Revenues | 3,030,258 | 3,283,499 | 3,289,978
Less operating expenses: |  |  |
Salaries, wages and benefits | 1,034,877 | 1,072,558 | 1,020,609
Fuel | 275,413 | 345,001 | 437,299
Supplies and maintenance | 246,061 | 256,494 | 253,096
Taxes and licenses | 97,230 | 102,684 | 97,929
Insurance and claims | 145,398 | 138,516 | 147,365
Depreciation and amortization | 290,405 | 299,509 | 279,923
Communications and utilities | 17,195 | 18,480 | 15,856
Gains on sales of property and equipment | (15,331) | (42,440) | (88,564)
Other segment items | (12,661) | 12,443 | 62,639
Reportable segment operating expenses | 2,964,110 | 3,107,083 | 2,966,902
Operating income (loss) | 66,148 | 176,416 | 323,076
Change in fair value | (419) | 2,204 |
ReedTMS |  |  |
Less operating expenses: |  |  |
Change in fair value |  | 2,700 |
NEHDS |  |  |
Less operating expenses: |  |  |
Change in fair value |  |  | 2,500
Reportable Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | 2,969,630 | 3,221,243 | 3,222,178
Less operating expenses: |  |  |
Salaries, wages and benefits | 1,004,486 | 1,041,113 | 990,060
Fuel | 274,145 | 343,462 | 435,254
Supplies and maintenance | 221,449 | 232,921 | 229,007
Taxes and licenses | 96,524 | 102,248 | 97,455
Insurance and claims | 145,092 | 138,214 | 147,032
Depreciation and amortization | 276,346 | 286,640 | 266,757
Rent and purchased transportation | 854,233 | 898,869 | 779,345
Communications and utilities | 15,867 | 17,544 | 14,970
Gains on sales of property and equipment | (12,083) | (46,950) | (87,282)
Other segment items | 19,286 | 21,973 | 18,841
Reportable segment operating expenses | 2,895,345 | 3,036,034 | 2,891,439
Operating income (loss) | 74,285 | 185,209 | 330,739
Other operating segments |  |  |
Less operating expenses: |  |  |
Operating income (loss) | (8,137) | (8,793) | (7,663)
Inter-segment eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | (14,429) | (17,690) | (5,218)
Revenues | (14,429) | (17,690) | (5,218)
Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 75,057 | 79,946 | 73,018
Truckload Transportation Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | 2,123,864 | 2,293,120 | 2,423,468
Truckload Transportation Services | Reportable Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | 2,138,293 | 2,310,810 | 2,428,686
Revenues | 2,138,293 | 2,310,810 | 2,428,686
Less operating expenses: |  |  |
Salaries, wages and benefits | 922,921 | 951,712 | 920,166
Fuel | 272,570 | 341,126 | 430,962
Supplies and maintenance | 211,847 | 224,988 | 221,821
Taxes and licenses | 95,541 | 101,149 | 96,461
Insurance and claims | 141,654 | 134,319 | 143,914
Depreciation and amortization | 261,170 | 271,245 | 256,768
Rent and purchased transportation | 139,848 | 130,076 | 119,506
Communications and utilities | 13,884 | 13,908 | 13,287
Gains on sales of property and equipment | (10,993) | (45,453) | (85,268)
Other segment items | 14,685 | 18,410 | 16,514
Reportable segment operating expenses | 2,063,127 | 2,141,480 | 2,134,131
Operating income (loss) | 75,166 | 169,330 | 294,555
Truckload Transportation Services | Inter-segment eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | (14,429) | (17,690) | (5,218)
Werner Logistics |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | 831,337 | 910,433 | 793,492
Werner Logistics | Reportable Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | 831,337 | 910,433 | 793,492
Revenues | 831,337 | 910,433 | 793,492
Less operating expenses: |  |  |
Salaries, wages and benefits | 81,565 | 89,401 | 69,894
Fuel | 1,575 | 2,336 | 4,292
Supplies and maintenance | 9,602 | 7,933 | 7,186
Taxes and licenses | 983 | 1,099 | 994
Insurance and claims | 3,438 | 3,895 | 3,118
Depreciation and amortization | 15,176 | 15,395 | 9,989
Rent and purchased transportation | 714,385 | 768,793 | 659,839
Communications and utilities | 1,983 | 3,636 | 1,683
Gains on sales of property and equipment | (1,090) | (1,497) | (2,014)
Other segment items | 4,601 | 3,563 | 2,327
Reportable segment operating expenses | 832,218 | 894,554 | 757,308
Operating income (loss) | (881) | 15,879 | 36,184
Werner Logistics | Inter-segment eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues from external customers | $ 0 | $ 0 | $ 0

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