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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2012
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share Reconciliation [Table Text Block] | The following is a reconciliation of the numerators and denominators of the basic and diluted earnings per share computations for each of the years in the three-year period ended December 31, 2012:
| 2012 |  | 2011 |  | 2010
BASIC |  |  |  |  |
Income (loss) from continuing operations attributable to common shareholders | $ | 152,808 |  |  | $ | (44,703 | ) |  | $ | (37,008 | )
Income (loss) from discontinued operations attributable to common shareholders | 4,041 |  |  | (59,018 | ) |  | (21,088 | )
Net income (loss) attributable to common shareholders | $ | 156,849 |  |  | $ | (103,721 | ) |  | $ | (58,096 | )
Weighted-average number of common shares outstanding | 159,109,424 |  |  | 152,473,336 |  |  | 130,985,809 |
Income (loss) per common share: |  |  |  |  |  |  |
Income (loss) from continuing operations | $ | 0.96 |  |  | $ | (0.29 | ) |  | $ | (0.28 | )
Income (loss) from discontinued operations | 0.03 |  |  | (0.39 | ) |  | (0.16 | )
Net income (loss) attributable to common shareholders | $ | 0.99 |  |  | $ | (0.68 | ) |  | $ | (0.44 | )
DILUTED: |  |  |  |  |
Income (loss) from continuing operations attributable to common shareholders | $ | 152,808 |  |  | $ | (44,703 | ) |  | $ | (37,008 | )
Impact of assumed conversions: |  |  |  |  |
Share Options | — |  |  | — |  |  | — |
Operating Partnership Units | 1,371 |  |  | — |  |  | — |
6.00% Convertible Guaranteed Notes | 8,953 |  |  | — |  |  | — |
Income (loss) from continuing operations attributable to common shareholders | 163,132 |  |  | (44,703 | ) |  | (37,008 | )
Income (loss) from discontinued operations attributable to common shareholders | 4,041 |  |  | (59,018 | ) |  | (21,088 | )
Impact of assumed conversions: |  |  |  |  |
Operating Partnership Units | (179 | ) |  | — |  |  | — |
Income (loss) from discontinued operations attributable to common shareholders | 3,862 |  |  | (59,018 | ) |  | (21,088 | )
Net income (loss) attributable to common shareholders | $ | 166,994 |  |  | $ | (103,721 | ) |  | $ | (58,096 | )
Weighted-average common shares outstanding - basic | 159,109,424 |  |  | 152,473,336 |  |  | 130,985,809 |
Effect of dilutive securities: |  |  |  |  |
Share Options | 306,449 |  |  | — |  |  | — |
Operating Partnership Units | 4,438,708 |  |  | — |  |  | — |
6.00% Convertible Guaranteed Notes | 15,805,245 |  |  | — |  |  | — |
Weighted-average common shares outstanding | 179,659,826 |  |  | 152,473,336 |  |  | 130,985,809 |
Income (loss) per common share: |  |  |  |  |
Income (loss) from continuing operations | $ | 0.91 |  |  | $ | (0.29 | ) |  | $ | (0.28 | )
Income (loss) from discontinued operations | 0.02 |  |  | (0.39 | ) |  | (0.16 | )
Net income (loss) attributable to common shareholders | $ | 0.93 |  |  | $ | (0.68 | ) |  | $ | (0.44 | )

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- Definition Tabular disclosure of the reconciliation of basic net earnings per share (or unit) to diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 260 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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