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Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Revenues | $ 177,425 | $ 194,806 | $ 295,107 | $ 329,343
Cost of revenues | (168,314) | (182,307) | (292,832) | (308,974)
Gross profit | 9,111 | 12,499 | 2,275 | 20,369
General and administrative expenses | (9,598) | (9,507) | (21,201) | (17,991)
Other operating income (expense), net | 325 | (457) | 2,086 | 599
Operating (loss) income | (162) | 2,535 | (16,840) | 2,977
Interest income | 69 | 189 | 432 | 531
Interest expense | (634) | (251) | (1,016) | (554)
Loss on extinguishment of debt | (240) |  | (240) |
(Loss) income before income taxes and earnings attributable to noncontrolling interests | (967) | 2,473 | (17,664) | 2,954
Income tax expense | (28) | (28) | (31) | (28)
Net (loss) income | (995) | 2,445 | (17,695) | 2,926
Noncontrolling owners’ interests in earnings of subsidiaries | (1,547) | (1,245) | (1,839) | (1,520)
Net (loss) income attributable to Sterling common stockholders | $ (2,542) | $ 1,200 | $ (19,534) | $ 1,406
Net (loss) earnings per share attributable to Sterling common stockholders: |  |  |  |
Basic (in Dollars per share) | $ (0.13) | $ 0.07 | $ (1.03) | $ 0.08
Diluted (in Dollars per share) | $ (0.13) | $ 0.07 | $ (1.03) | $ 0.08
Weighted average number of common shares outstanding used in computing per share amounts: |  |  |  |
Basic (in Shares) | 19,269,977 | 17,942,124 | 19,040,870 | 17,308,551
Diluted (in Shares) | 19,269,977 | 18,110,025 | 19,040,870 | 17,464,229

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