CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue
Construction	$ 305,605	$ 269,220	$ 494,125	$ 426,261
Large Project Construction	182,893	244,328	373,198	431,663
Construction Materials	80,744	72,322	122,168	107,793
Total revenue	569,242	585,870	989,491	965,717
Cost of revenue
Construction	265,543	244,393	432,388	392,289
Large Project Construction	168,120	193,536	340,654	365,080
Construction Materials	69,811	65,526	110,572	104,526
Total cost of revenue	503,474	503,455	883,614	861,895
Gross profit	65,768	82,415	105,877	103,822
Selling, general and administrative expenses	49,094	51,098	101,297	100,346
Gain on sales of property and equipment	(475)	(2,993)	(1,286)	(3,886)
Operating income	17,149	34,310	5,866	7,362
Other (income) expense
Interest income	(528)	(413)	(970)	(893)
Interest expense	3,985	4,339	7,481	7,937
Equity in income of affiliates	(670)	(410)	(607)	(1,202)
Other income, net	(152)	(1,697)	(1,436)	(1,645)
Total other expense	2,635	1,819	4,468	4,197
Income before provision for income taxes	14,514	32,491	1,398	3,165
Provision for income taxes	4,975	10,284	469	2,220
Net income	9,539	22,207	929	945
Amount attributable to non-controlling interests	74	(8,566)	124	(7,858)
Net income (loss) attributable to Granite Construction Incorporated	$ 9,613	$ 13,641	$ 1,053	$ (6,913)
Net income (loss) per share attributable to common shareholders (see Note 12)
Basic (in dollars per share)	$ 0.24	$ 0.35	$ 0.03	$ (0.18)
Diluted (in dollars per share)	$ 0.24	$ 0.34	$ 0.03	$ (0.18)
Weighted average shares of common stock
Weighted average common shares outstanding, basic	39,358	39,115	39,287	39,033
Weighted average common shares outstanding, diluted	39,881	39,807	39,848	39,033
Dividends per common share (in US$ per share)	$ 0.13	$ 0.13	$ 0.26	$ 0.26