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Earnings Per Share | 6 Months Ended
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Jun. 30, 2015
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings per Share The following table shows the information used in the calculation of our share counts for basic and diluted earnings per share:
| For the Three Months Ended |  | For the Six Months Ended
| June 30, |  | June 30,
| 2014 |  | 2015 |  | 2014 |  | 2015
Weighted average common shares outstanding for basic calculation | 135,963,054 |  |  | 137,252,356 |  |  | 135,713,004 |  |  | 137,112,630 |
Add: Effect of stock options and restricted stock | — |  |  | — |  |  | — |  |  | — |
Weighted average common shares outstanding for diluted calculation | 135,963,054 |  |  | 137,252,356 |  |  | 135,713,004 |  |  | 137,112,630 |
Basic earnings per common share are calculated by dividing net income (loss) by the weighted average number of common shares outstanding. Diluted earnings per share are calculated by dividing net income (loss) by the sum of the weighted average number of common shares outstanding plus the additional common shares that would have been outstanding if potentially dilutive securities had been issued. The weighted average common shares outstanding for the diluted calculation excludes consideration of stock options covering 1,079,251 shares in both the three and six months ended June 30, 2014, as these shares are anti-dilutive. The weighted average common shares outstanding for the diluted calculation excludes consideration of stock options covering 1,359,199 shares in both the three and six months ended June 30, 2015, as these shares are anti-dilutive.

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