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v3.25.3

Revisions in Estimates (Details) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 USD ($) project $ / shares | Sep. 30, 2024 USD ($) project $ / shares | Sep. 30, 2025 USD ($) project $ / shares | Sep. 30, 2024 USD ($) project $ / shares
Change in Accounting Estimate [Line Items] |  |  |  |
Range of change in gross profit from each project, net | $ 260,548 | $ 202,949 | $ 543,496 | $ 421,945
Changes to project profitability, net | 147,525 | 109,446 | 215,001 | 130,028
Changes to net income (loss) | 109,397 | 83,977 | 161,415 | 93,392
Changes to net income (loss) attributable to Granite Construction Incorporated | $ 102,929 | $ 78,951 | $ 140,973 | $ 84,863
Net income per share, diluted (USD per share) | $ / shares | $ 1.98 | $ 1.57 | $ 2.83 | $ 1.79
Revisions in Estimates |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |
Range of change in gross profit from each project, net |  |  | $ 5,000 |
Revisions in Estimates, Increase |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |
Number of projects with estimate changes | 2 | 2 | 7 | 2
Changes to project profitability, net | $ 13,300 | $ 11,100 | $ 50,800 | $ 11,400
Changes to net income (loss) | 9,900 | 8,500 | 37,700 | 8,700
Amounts attributable to non-controlling interests | 0 | 0 | 5,100 | 0
Changes to net income (loss) attributable to Granite Construction Incorporated | $ 9,900 | $ 8,500 | $ 32,600 | $ 8,700
Net income per share, diluted (USD per share) | $ / shares | $ 0.18 | $ 0.16 | $ 0.62 | $ 0.17
Revisions in Estimates, Increase | Minimum |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |
Range of change in gross profit from each project, net | $ 5,000 | $ 5,400 | $ 5,200 | $ 5,200
Revisions in Estimates, Increase | Maximum |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |
Range of change in gross profit from each project, net | $ 8,300 | $ 5,700 | $ 9,800 | $ 6,200
Revisions in Estimates, Decrease |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |
Number of projects with estimate changes | project | 1 | 0 | 3 | 4
Range of change in gross profit from each project, net | $ 5,900 | $ 0 |  |
Changes to project profitability, net | 5,900 | 0 | $ 32,500 | $ 44,200
Changes to net income (loss) | 4,400 | 0 | 24,100 | 33,800
Amounts attributable to non-controlling interests | 0 | 0 | 0 | 5,400
Changes to net income (loss) attributable to Granite Construction Incorporated | $ 4,400 | $ 0 | $ 24,100 | $ 28,500
Net income per share, diluted (USD per share) | $ / shares | $ 0.08 | $ 0 | $ 0.46 | $ 0.54
Revisions in Estimates, Decrease | Minimum |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |
Range of change in gross profit from each project, net |  |  | $ 6,800 | $ 5,300
Revisions in Estimates, Decrease | Maximum |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |
Range of change in gross profit from each project, net |  |  | $ 15,100 | $ 22,000

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