CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenue
Construction	$ 464,624	$ 427,018	$ 1,005,457	$ 921,143
Large Project Construction	249,345	217,084	642,116	590,282
Construction Materials	89,936	107,274	200,363	229,442
Total revenue	803,905	751,376	1,847,936	1,740,867
Cost of revenue
Construction	393,094	366,547	857,938	801,193
Large Project Construction	225,826	195,430	591,438	536,613
Construction Materials	77,311	93,316	178,440	203,849
Total cost of revenue	696,231	655,293	1,627,816	1,541,655
Gross profit	107,674	96,083	220,120	199,212
Selling, general and administrative expenses	54,194	45,262	159,032	143,811
Gain on sales of property and equipment	(398)	(804)	(2,364)	(2,090)
Operating income	53,878	51,625	63,452	57,491
Other (income) expense
Interest income	(790)	(591)	(2,424)	(1,561)
Interest expense	3,034	3,485	9,270	10,966
Equity in income of affiliates	(2,424)	(1,155)	(4,583)	(1,762)
Other (income) expense, net	(732)	27	(5,287)	(1,409)
Total other (income) expense	(912)	1,766	(3,024)	6,234
Income before provision for income taxes	54,790	49,859	66,476	51,257
Provision for income taxes	16,703	17,679	20,442	18,148
Net income	38,087	32,180	46,034	33,109
Amount attributable to non-controlling interests	(982)	(1,421)	(5,987)	(1,297)
Net income attributable to Granite Construction Incorporated	$ 37,105	$ 30,759	$ 40,047	$ 31,812
Net income per share attributable to common shareholders (see Note 11)
Basic (in dollars per share)	$ 0.94	$ 0.78	$ 1.01	$ 0.81
Diluted (in dollars per share)	$ 0.92	$ 0.77	$ 1.00	$ 0.80
Weighted average shares of common stock
Weighted average common shares outstanding, basic	39,599	39,378	39,539	39,317
Weighted average common shares outstanding, diluted	40,313	39,897	40,205	39,863
Dividends per common share (in US$ per share)	$ 0.13	$ 0.13	$ 0.39	$ 0.39