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Acquisition - Unaudited Pro forma Consolidated Results of Operations (Detail) - Choptank Transport LLC [Member] - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Business Acquisition [Line Items] |  |  |  |
Revenue | $ 1,397,880 | $ 1,251,863 | $ 4,185,337 | $ 3,452,175
Net Income | $ 87,439 | $ 43,073 | $ 278,780 | $ 86,364
Earnings per share |  |  |  |
Basic | $ 2.64 | $ 1.29 | $ 8.33 | $ 2.58
Diluted | $ 2.61 | $ 1.27 | $ 8.25 | $ 2.55

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