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Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income attributable to Sterling common stockholders	$ 25,187	$ 11,617	$ (9,238)
Net income attributable to noncontrolling interest included in equity	4,353	4,200	1,826
Comprehensive income (loss)	$ 29,540	$ 15,817	$ (7,412)

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- Definition

Amount of net income or loss for the period allocated to the non-controlling interest included in equity in order to derive to the portion attributable to the parent.

+ References

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References

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-SubTopic 10
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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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-Publisher FASB
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