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Contract Assets and Liabilities - Summary of contract assets (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Contractors [Line Items] |  |  |
Unbilled revenue, net | $ 169,761 |  | $ 149,449
Contract retainages, net | 183,720 |  | 152,493
Contract assets, net | 353,481 |  | $ 301,942
Changes in contract assets, net, Change | 49,762 | $ (8,212) |
Change |  |  |
Contractors [Line Items] |  |  |
Unbilled revenue, net, Change | 20,312 |  |
Contract retainages, net, Change | 31,227 |  |
Changes in contract assets, net, Change | $ 51,539 |  |

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