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Construction Joint Ventures - Schedule of Unconsolidated Construction Joint Ventures Revenue and Costs (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Schedule of Equity Method Investments [Line Items] |  |  |
Cost of revenue | $ 3,434,877 | $ 3,112,739 | $ 2,931,762
Increase to net income | 140,443 | 29,587 | 78,857
Equity in net loss from unconsolidated construction joint ventures | 5,102 | 18,617 | $ 19,676
Collaborative Arrangement, Revenue Not from Contract with Customer, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  | Revenue
Collaborative Arrangement |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Revenue | 27,790 | 24,508 | $ 120,157
Cost of revenue | 34,845 | 44,089 | 139,538
Granite’s interest in gross profit (loss) | (7,055) | (19,581) | (19,381)
Equity in net loss from unconsolidated construction joint ventures | (5,102) | (18,617) | (19,676)
Collaborative Arrangement | Corporate Joint Venture |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Revenue | 66,871 | 66,738 | 330,835
Cost of revenue | 95,448 | 95,448 | 378,237
Increase to net income | (21,837) | (24,843) | (47,904)
Collaborative Arrangement | Co-venturer | Other Partners Interest in Partnerships |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Revenue | 39,081 | 42,230 | 210,678
Cost of revenue | 60,603 | 51,359 | 238,699
Increase to net income | $ (16,735) | $ (6,226) | $ (28,228)

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