Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (23,846)	$ 19,578	$ (49,618)	$ (5,517)
Other comprehensive income (loss), net of tax:
Net unrealized gain (loss) on cash flow hedges, net of tax	(366)	(377)	(558)	2,059
Less: reclassification for net gains included in interest expense, net of tax	112	1,282	112	3,042
Net change	(254)	905	(446)	5,101
Foreign currency translation adjustments, net	396	(90)	453	646
Other comprehensive income, net of tax	142	815	7	5,747
Comprehensive income (loss), net of tax	(23,704)	20,393	(49,611)	230
Non-controlling interests in comprehensive (income) loss, net of tax	6,846	(897)	9,595	(2,535)
Comprehensive income (loss) attributable to Granite Construction Incorporated, net of tax	$ (16,858)	$ 19,496	$ (40,016)	$ (2,305)