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Segment Information - Revenue and Gross Margin by Reportable Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Revenue and other financial information by reportable segment |  |  |  |
Revenue | $ 292,161 | $ 253,367 | $ 831,175 | $ 730,744
Adjusted gross margin | 177,956 | 141,406 | 489,791 | 394,017
Capital expenditures |  |  | 261,044 | 261,977
Contract operations |  |  |  |
Revenue and other financial information by reportable segment |  |  |  |
Revenue | 245,420 | 207,552 | 693,939 | 596,417
Adjusted gross margin | 165,610 | 132,279 | 457,108 | 365,629
Aftermarket services |  |  |  |
Revenue and other financial information by reportable segment |  |  |  |
Revenue | 46,741 | 45,815 | 137,236 | 134,327
Adjusted gross margin | $ 12,346 | $ 9,127 | $ 32,683 | $ 28,388

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