CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
CONSOLIDATED STATEMENTS OF INCOME
Revenue	$ 608,311	$ 507,828	$ 1,800,978	$ 1,395,085
Cost of revenue	537,890	457,699	1,591,021	1,262,394
Gross profit	70,421	50,129	209,957	132,691
Selling, general and administrative expenses	42,559	35,994	128,390	101,150
Impairment of goodwill		2,716		2,716
Operating income	27,862	11,419	81,567	28,825
Other income (expense):
Investment income	6,066		6,066
Foreign exchange gain (loss)	167	(92)	299	288
Other expense	(39)	(278)	(52)	(278)
Interest income	228	31	411	122
Interest expense	(2,198)	(2,246)	(6,605)	(6,754)
Income before provision for income taxes	32,086	8,834	81,686	22,203
Provision for income taxes	(9,952)	(4,078)	(28,644)	(9,244)
Net income	22,134	4,756	53,042	12,959
Less net income attributable to noncontrolling interests	(1,537)	(252)	(3,209)	(706)
Net income attributable to Primoris	$ 20,597	$ 4,504	$ 49,833	$ 12,253
Dividends per common share (in dollars per share)	$ 0.055	$ 0.055	$ 0.17	$ 0.17
Earnings per share:
Basic (in dollars per share)	0.40	0.09	0.97	0.24
Diluted (in dollars per share)	$ 0.40	$ 0.09	$ 0.96	$ 0.24
Weighted average common shares outstanding:
Basic (in shares)	51,441	51,780	51,491	51,759
Diluted (in shares)	51,707	52,034	51,751	51,978