Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net loss attributable to Sterling common stockholders	$ 2,415	$ 256	$ (2,890)	$ (19,278)
Net income attributable to noncontrolling interests included in equity	740	1,109	1,252	2,948
Other comprehensive income (loss), net of tax:
Realized loss from settlement of derivatives		24		107
Change in the effective portion of unrealized loss in fair market value of derivatives		(6)		(6)
Comprehensive income (loss)	$ 3,155	$ 1,383	$ (1,638)	$ (16,229)