Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenues	$ 205,629	$ 176,000	$ 521,778	$ 471,107
Cost of revenues	(188,597)	(161,542)	(484,827)	(454,374)
Gross profit	17,032	14,458	36,951	16,733
General and administrative expenses	(9,575)	(11,119)	(29,221)	(32,320)
Other operating income (expense), net	(3,785)	(958)	(7,143)	1,128
Operating income (loss)	3,672	2,381	587	(14,459)
Interest income	15	32	19	464
Interest expense	(491)	(1,087)	(2,176)	(2,103)
Loss on extinguishment of debt				(240)
Income (loss) before income taxes and earnings attributable to noncontrolling interests	3,196	1,326	(1,570)	(16,338)
Income tax (expense) benefit	(41)	39	(68)	8
Net income (loss)	3,155	1,365	(1,638)	(16,330)
Noncontrolling owners’ interests in earnings of subsidiaries and joint ventures	(740)	(1,109)	(1,252)	(2,948)
Net income (loss) attributable to Sterling common stockholders	$ 2,415	$ 256	$ (2,890)	$ (19,278)
Net income (loss) per share attributable to Sterling common stockholders:
Basic and diluted (in dollars per share)	$ 0.10	$ 0.01	$ (0.12)	$ (1)
Weighted average number of common shares outstanding used in computing per share amounts:
Basic (in shares)	25,002,964	19,627,674	23,914,688	19,269,123
Diluted (in shares)	25,364,881	19,627,674	23,914,688	19,269,123