CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 34,805	$ 22,134	$ 53,212	$ 53,042
Other comprehensive income, net of tax:
Foreign currency translation adjustments	200		577
Comprehensive income	35,005	22,134	53,789	53,042
Less net income attributable to noncontrolling interests	(2,114)	(1,537)	(8,118)	(3,209)
Comprehensive income attributable to Primoris	$ 32,891	$ 20,597	$ 45,671	$ 49,833