CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenue
Construction	$ 331,346	$ 305,605	$ 540,833	$ 494,125
Large Project Construction	197,322	182,893	392,771	373,198
Construction Materials	75,911	80,744	110,427	122,168
Total revenue	604,579	569,242	1,044,031	989,491
Cost of revenue
Construction	282,290	266,721	464,844	434,646
Large Project Construction	183,668	168,414	365,612	341,183
Construction Materials	65,420	69,907	101,129	110,533
Total cost of revenue	531,378	505,042	931,585	886,362
Gross profit	73,201	64,200	112,446	103,129
Selling, general and administrative expenses	48,705	47,526	104,838	98,549
Gain on sales of property and equipment	(1,366)	(475)	(1,966)	(1,286)
Operating income	25,862	17,149	9,574	5,866
Other (income) expense
Interest income	(798)	(528)	(1,634)	(970)
Interest expense	3,187	3,985	6,236	7,481
Equity in income of affiliates	(717)	(670)	(2,159)	(607)
Other income, net	(3,183)	(152)	(4,555)	(1,436)
Total other (income) expense	(1,511)	2,635	(2,112)	4,468
Income before provision for income taxes	27,373	14,514	11,686	1,398
Provision for income taxes	8,916	4,975	3,739	469
Net income	18,457	9,539	7,947	929
Amount attributable to non-controlling interests	(4,327)	74	(5,005)	124
Net income attributable to Granite Construction Incorporated	$ 14,130	$ 9,613	$ 2,942	$ 1,053
Net income per share attributable to common shareholders (see Note 11)
Basic (in dollars per share)	$ 0.36	$ 0.24	$ 0.07	$ 0.03
Diluted (in dollars per share)	$ 0.35	$ 0.24	$ 0.07	$ 0.03
Weighted average shares of common stock
Weighted average common shares outstanding, basic	39,584	39,358	39,509	39,287
Weighted average common shares outstanding, diluted	40,302	39,881	40,140	39,848
Dividends per common share (in US$ per share)	$ 0.13	$ 0.13	$ 0.26	$ 0.26