| Summary of Reconciliation of Numerator and Denominator used in Computation of Basic and Diluted Net (Loss) Income Per Share |
The table below is a reconciliation of the numerator and denominator used in the computation of basic and diluted net income per share computed using the two-class method (dollars in thousands): | | | | | | | | | | | | | | Years Ended December 31, | | 2017 | | 2016 | | 2015 | Basic and diluted income: | | | | | | Net loss from continuing operations | $ | (2,270 | ) | | $ | (985 | ) | | $ | (32,640 | ) | Gain on disposition of assets | 42,698 |
| | 29,623 |
| | (61 | ) | Less: income attributable to unvested restricted stock | (940 | ) | | (614 | ) | | (696 | ) | Less: dividends paid to preferred stockholders | (2,530 | ) | | — |
| | — |
| Income (loss) used in basic and diluted income per common share from continuing operations | 36,958 |
| | 28,024 |
| | (33,397 | ) | Income used in basic and diluted income per share from discontinued operations | 36,720 |
| | 68,808 |
| | 125,913 |
| Net income attributable to common stockholders used in basic and diluted income per share | $ | 73,678 |
| | $ | 96,832 |
| | $ | 92,516 |
| | | | | | | Basic weighted average shares of common stock outstanding: | | | | | | Weighted average shares of common stock outstanding | 469,212,533 |
| | 470,023,674 |
| | 433,361,726 |
| Less: unvested weighted average shares of restricted stock | (1,277,588 | ) | | (805,898 | ) | | (1,138,773 | ) | Weighted average number of common shares outstanding used in basic income per share | 467,934,945 |
| | 469,217,776 |
| | 432,222,953 |
| Net income (loss) per share attributable to common stockholders - basic | | | | | | Continuing operations | $ | 0.08 |
| | $ | 0.06 |
| | $ | (0.08 | ) | Discontinued operations | 0.08 |
| | 0.15 |
| | 0.29 |
| Net income per share attributable to common stockholders - basic | $ | 0.16 |
| | $ | 0.21 |
| | $ | 0.21 |
| Dilutive weighted average shares of common stock (1) | | | | | | Stock options | — |
| | 3,835 |
| | — |
| Unvested performance shares | 7,843 |
| | 24,654 |
| | — |
| Weighted average shares of common stock used in diluted income per share | 467,942,788 |
| | 469,246,265 |
| | 432,222,953 |
| Net income (loss) per share attributable to common stockholders - diluted | | | | | | Continuing operations | $ | 0.08 |
| | $ | 0.06 |
| | $ | (0.08 | ) | Discontinued operations | 0.08 |
| | 0.15 |
| | 0.29 |
| Net income per share attributable to common stockholders - diluted | $ | 0.16 |
| | $ | 0.21 |
| | $ | 0.21 |
| | | | | | | Potentially dilutive shares of common stock | | | | | | Unvested shares of restricted stock | 65,480 |
| | 119,633 |
| | 339,541 |
| Unvested performance shares | — |
| | — |
| | 319,288 |
| Stock options | — |
| | — |
| | 3,384 |
| Total | 65,480 |
| | 119,633 |
| | 662,213 |
|
(1) Assumes the most dilutive issuance of potentially issuable shares between the two-class and treasury stock method unless the result would be anti-dilutive. |