CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue
Construction	$ 427,018	$ 447,097	$ 921,143	$ 873,357
Large Project Construction	217,084	179,446	590,282	611,110
Construction Materials	107,274	93,221	229,442	201,014
Total revenue	751,376	719,764	1,740,867	1,685,481
Cost of revenue
Construction	362,720	398,295	795,108	790,584
Large Project Construction	194,512	173,767	535,166	538,846
Construction Materials	93,246	81,010	203,818	185,536
Total cost of revenue	650,478	653,072	1,534,092	1,514,966
Gross profit	100,898	66,692	206,775	170,515
Selling, general and administrative expenses	50,077	47,386	151,374	147,731
Gain on sales of property and equipment	(804)	(3,004)	(2,090)	(6,891)
Operating income	51,625	22,310	57,491	29,675
Other (income) expense
Interest income	(591)	(451)	(1,561)	(1,343)
Interest expense	3,485	2,488	10,966	10,426
Equity in income of affiliates	(1,155)	(1,109)	(1,762)	(2,310)
Other expense (income), net	27	1,196	(1,409)	(450)
Total other expense	1,766	2,124	6,234	6,323
Income before provision for income taxes	49,859	20,186	51,257	23,352
Provision for income taxes	17,679	6,081	18,148	8,301
Net income	32,180	14,105	33,109	15,051
Amount attributable to non-controlling interests	(1,421)	1,177	(1,297)	(6,681)
Net income attributable to Granite Construction Incorporated	$ 30,759	$ 15,282	$ 31,812	$ 8,370
Net income per share attributable to common shareholders (see Note 12)
Basic (in dollars per share)	$ 0.78	$ 0.39	$ 0.81	$ 0.21
Diluted (in dollars per share)	$ 0.77	$ 0.38	$ 0.80	$ 0.21
Weighted average shares of common stock
Weighted average common shares outstanding, basic	39,378	39,150	39,317	39,073
Weighted average common shares outstanding, diluted	39,897	39,813	39,863	39,790
Dividends per common share (in US$ per share)	$ 0.13	$ 0.13	$ 0.39	$ 0.39