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Note 16 - Segments - Segment Reporting Information (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Revenues from external customers | $ 7,925,024 | $ 7,101,668 | $ 5,126,142
Interest income | 777 | 639 | 657
Interest expense | 53,694 | 19,763 | 2,427
Depreciation and amortization | 59,830 | 55,665 | 53,354
Segment operating income | 512,381 | 506,113 | 309,036
Segment income from continuing operations before taxes | 462,061 | 509,327 | 313,683
Segment assets | 4,364,241 | 3,821,066 | 3,119,977
Goodwill | 420,708 | 416,363 | 370,331
Expenditures for segment assets | 368,881 | 243,060 | 167,177
Truck Segment [Member] |  |  |
Revenues from external customers | 7,909,230 | 7,084,847 | 5,109,070
Interest income | 777 | 639 | 657
Interest expense | 53,694 | 19,763 | 2,119
Depreciation and amortization | 59,373 | 55,354 | 53,096
Segment operating income | 512,375 | 505,415 | 307,394
Segment income from continuing operations before taxes | 462,055 | 508,629 | 312,350
Segment assets | 4,308,264 | 3,769,007 | 3,068,365
Goodwill | 418,148 | 413,803 | 367,771
Expenditures for segment assets | 367,942 | 242,503 | 163,624
Other Segments [Member] |  |  |
Revenues from external customers | 15,794 | 16,821 | 17,072
Interest expense |  |  | 308
Depreciation and amortization | 457 | 311 | 258
Segment operating income | 6 | 698 | 1,642
Segment income from continuing operations before taxes | 6 | 698 | 1,333
Segment assets | 55,977 | 52,059 | 51,612
Goodwill | 2,560 | 2,560 | 2,560
Expenditures for segment assets | $ 939 | $ 557 | $ 3,553

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