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Partners Equity of the Operating Partnership (Tables) | 12 Months Ended
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Dec. 31, 2015
Equity [Abstract] |
Earnings Per Common Partnership Unit | The following tables detail the number of units and net income used to calculate basic and diluted earnings per common partnership unit (in thousands, except unit and per unit amounts; results may not add due to rounding):
| Year ended December 31, |
| 2015 |  |  | 2014 |  |  | 2013 |
| Basic |  |  | Diluted |  |  | Basic |  |  | Diluted |  |  | Basic |  |  | Diluted |
Numerator |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations | $ | (30,740 | ) |  | $ | (30,740 | ) |  | $ | 6,024 |  |  | $ | 6,024 |  |  | $ | 38,982 |  |  | $ | 38,982 |
Nonforfeitable dividends allocated to unvested restricted unitholders |  | (329 | ) |  |  | (329 | ) |  |  | (349 | ) |  |  | (349 | ) |  |  | (363 | ) |  |  | (363 | )
Preferred unit dividends |  | (6,900 | ) |  |  | (6,900 | ) |  |  | (6,900 | ) |  |  | (6,900 | ) |  |  | (6,900 | ) |  |  | (6,900 | )
Net loss attributable to non-controlling interests |  | 3 |  |  |  | 3 |  |  |  | 44 |  |  |  | 44 |  |  |  | - |  |  |  | - |
Income (loss) from continuing operations available to common unitholders |  | (37,966 | ) |  |  | (37,966 | ) |  |  | (1,181 | ) |  |  | (1,181 | ) |  |  | 31,719 |  |  |  | 31,719 |
Discontinued operations attributable to common unitholders |  | - |  |  |  | - |  |  |  | 918 |  |  |  | 918 |  |  |  | 4,207 |  |  |  | 4,207 |
Net income (loss) attributable to common unitholders | $ | (37,966 | ) |  | $ | (37,966 | ) |  | $ | (263 | ) |  | $ | (263 | ) |  | $ | 35,926 |  |  | $ | 35,926 |
Denominator |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average units outstanding |  | 179,697,262 |  |  |  | 179,697,262 |  |  |  | 167,942,246 |  |  |  | 167,942,246 |  |  |  | 154,929,545 |  |  |  | 154,929,545 |
Contingent securities/Share based compensation |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 1,273,853 |
Total weighted-average units outstanding |  | 179,697,262 |  |  |  | 179,697,262 |  |  |  | 167,942,246 |  |  |  | 167,942,246 |  |  |  | 154,929,545 |  |  |  | 156,203,398 |
Earnings (loss) per Common Partnership Unit: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations attributable to common unitholders |  | (0.21 | ) |  |  | (0.21 | ) |  |  | (0.01 | ) |  |  | (0.01 | ) |  |  | 0.20 |  |  |  | 0.20 |
Discontinued operations attributable to common unitholders |  | - |  |  |  | - |  |  |  | 0.01 |  |  |  | 0.01 |  |  |  | 0.03 |  |  |  | 0.03 |
Net income (loss) attributable to common unitholders | $ | (0.21 | ) |  | $ | (0.21 | ) |  | $ | - |  |  | $ | - |  |  | $ | 0.23 |  |  | $ | 0.23 |

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