Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net (loss) income	$ (166,181)	$ (56,702)	$ 11,536
Other comprehensive loss, net of tax:
Net unrealized loss on derivatives	(4,155)	(2,963)	(451)
Less: reclassification for net losses (gains) included in interest expense	1,816	(323)	(214)
Net change	(2,339)	(3,286)	(665)
Foreign currency translation adjustments, net	(51)	1,390	(718)
Other comprehensive loss	(2,390)	(1,896)	(1,383)
Comprehensive (loss) income	(168,571)	(58,598)	10,153
Non-controlling interests in comprehensive income (loss)	21,064	(3,489)	(10,954)
Comprehensive loss attributable to Granite Construction Incorporated	$ (147,507)	$ (62,087)	$ (801)