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Net Income (Loss) Per Common Share (Tables) | 6 Months Ended
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Jun. 30, 2015
Earnings Per Share [Abstract] |
Calculation of Basic Net (Loss) Income Per Share | The following table presents the calculation of basic net (loss) income per share for periods presented: (in thousands, except per share data):
| Three Months ended June 30, 2015 |  |  | Three Months ended June 30, 2014 |  |  | Six Months ended June 30, 2015 |  |  | Six Months ended June 30, 2014 |
Numerator for basic and diluted net (loss) income per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income | $ | (73,483 | ) |  | $ | 17,322 |  |  | $ | (67,982 | ) |  | $ | 13,942 |
Preferred deemed dividend |  | — |  |  |  | — |  |  |  | — |  |  |  | (9,455 | )
Series B preferred stock dividends |  | (4,500 | ) |  |  | — |  |  |  | (8,748 | ) |  |  | — |
Net (loss) income attributable to common shareholders | $ | (77,983 | ) |  | $ | 17,322 |  |  | $ | (76,730 | ) |  | $ | 4,487 |
Denominator for basic net (loss) income per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average shares outstanding |  | 204,368,982 |  |  |  | 202,164,035 |  |  |  | 203,361,710 |  |  |  | 202,071,761 |
Weighted-average unvested restricted shares outstanding |  | (2,481,891 | ) |  |  | (1,164,554 | ) |  |  | (1,842,836 | ) |  |  | (1,333,534 | )
Denominator for basic net (loss) income per share: |  | 201,887,091 |  |  |  | 200,999,481 |  |  |  | 201,518,874 |  |  |  | 200,738,227 |
Basic net (loss) income per share attributable to common shareholders | $ | (0.39 | ) |  | $ | 0.09 |  |  | $ | (0.38 | ) |  | $ | 0.02 |
Calculation of Diluted Net (Loss) Income Per Share | The following table presents the calculation of diluted net (loss) income per share for periods presented: (in thousands, except per share data):
| Three Months ended June 30, 2015 |  |  | Three Months ended June 30, 2014 |  |  | Six Months ended June 30, 2015 |  |  | Six Months ended June 30, 2014 |
Numerator for basic and diluted net (loss) income per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income | $ | (73,483 | ) |  | $ | 17,322 |  |  | $ | (67,982 | ) |  | $ | 13,942 |
Preferred deemed dividend |  | — |  |  |  | — |  |  |  | — |  |  |  | (9,455 | )
Series B preferred stock dividends |  | (4,500 | ) |  |  | — |  |  |  | (8,748 | ) |  |  | — |
Net (loss) income attributable to common shareholders | $ | (77,983 | ) |  | $ | 17,322 |  |  | $ | (76,730 | ) |  | $ | 4,487 |
Denominator for diluted net (loss) income per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average shares outstanding |  | 204,368,982 |  |  |  | 202,164,035 |  |  |  | 203,361,710 |  |  |  | 202,071,761 |
Weighted-average unvested restricted shares outstanding |  | (2,481,891 | ) |  |  | (1,164,554 | ) |  |  | (1,842,836 | ) |  |  | (1,333,534 | )
Effect of dilutive potential shares * |  | — |  |  |  | 42,587,735 |  |  |  | — |  |  |  | 35,224,877 |
Denominator for diluted net (loss) income per share: |  | 201,887,091 |  |  |  | 243,587,216 |  |  |  | 201,518,874 |  |  |  | 235,963,104 |
Diluted net (loss) income per share attributable to common shareholders | $ | (0.39 | ) |  | $ | 0.07 |  |  | $ | (0.38 | ) |  | $ | 0.02 |
*There were no dilutive effects from any equity instruments for periods presented which did not have net income, therefore diluted net (loss) income per share was the same as basic net (loss) income for periods presented which reflect a net loss.

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