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Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Revenues | $ 189,275 | $ 185,935 | $ 518,618 | $ 430,320
Cost of revenues | (180,919) | (177,576) | (489,894) | (437,211)
Gross profit (loss) | 8,356 | 8,359 | 28,724 | (6,891)
General and administrative expenses | (9,326) | (8,176) | (27,316) | (27,273)
Other operating income (expense), net | (603) | 1,514 | (4) | 1,965
Operating income (loss) | (1,573) | 1,697 | 1,404 | (32,199)
Gain (loss) on sale of securities |  | (11) |  | 472
Interest income | 113 | 335 | 644 | 871
Interest expense | (211) | (306) | (766) | (614)
Income (loss) before income taxes and earnings attributable to noncontrolling interests | (1,671) | 1,715 | 1,282 | (31,470)
Income tax (expense) benefit | (546) | 380 | (573) | 12,928
Net income (loss) | (2,217) | 2,095 | 709 | (18,542)
Noncontrolling owners’ interests in earnings of subsidiaries and joint ventures | (1,718) | (2,284) | (3,238) | (3,250)
Net loss attributable to Sterling common stockholders | $ (3,935) | $ (189) | $ (2,529) | $ (21,792)
Net loss per share attributable to Sterling common stockholders: |  |  |  |
Basic (in Dollars per share) | $ (0.21) | $ (0.06) | $ (0.14) | $ (1.38)
Diluted (in Dollars per share) | $ (0.21) | $ (0.06) | $ (0.14) | $ (1.38)
Weighted average number of common shares outstanding used in computing per share amounts: |  |  |  |
Basic (in Shares) | 18,809,401 | 16,652,074 | 17,814,332 | 16,626,118
Diluted (in Shares) | 18,809,401 | 16,652,074 | 17,814,332 | 16,626,118

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