Income Taxes - Schedule of (Benefit from) Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 38,128	$ 25,469	$ 53,586	$ 36,636
Effective tax rate	25.80%	23.30%	24.90%	28.20%

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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GRANITE CONSTRUCTION INC 10-Q