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Earnings (loss) per Share | 12 Months Ended
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Dec. 31, 2013
Earnings (loss) per Share |
Earnings (loss) per Share | 20. Earnings (loss) per Share Earnings (loss) per share were calculated as follows:
|  | For the year ended December 31 |
|  | 2011 |  | 2012 |  | 2013 |
Net income (loss) attributable to stockholders |  | $ | (844 | ) | $ | (14,853 | ) | $ | 7,442 |
Basic weighted average number of common shares outstanding |  | 54,608,919 |  | 54,926,440 |  | 55,301,276 |
Effect of dilutive securities: |  |  |  |  |  |  |
Stock options |  | — |  | — |  | 501,062 |
Diluted weighted average number of common shares outstanding |  | 54,608,919 |  | 54,926,440 |  | 55,802,338 |
Basic earnings (loss) per share |  | $ | (0.02 | ) | $ | (0.27 | ) | $ | 0.13 |
Diluted earnings (loss) per share |  | $ | (0.02 | ) | $ | (0.27 | ) | $ | 0.13 |
Anti-dilutive options were not included in the diluted EPS calculation for the year ended December 31, 2011 and 2012.

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