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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2015
Earnings Per Share [Abstract] |
Computation Of Basic And Diluted Earnings Per Share | The following table summarizes the Company’s computation of basic and diluted earnings per share (EPS) for the years ended December 31, 2015, 2014 and 2013 (amounts in thousands except per share information):
| Year Ended December 31, 2015
| Income (numerator) |  | Shares (denominator) |  | Per Share Amount
Basic EPS: |  |  |  |  |
Income from continuing operations | $ | 194,333 |  |  |  |  |
Less: preferred dividend requirements | (23,806 | ) |  |  |  |
Income from continuing operations available to common shareholders | $ | 170,527 |  |  | 58,138 |  |  | $ | 2.93 |
Income from discontinued operations available to common shareholders | $ | 199 |  |  | 58,138 |  |  | $ | 0.01 |
Net income available to common shareholders | $ | 170,726 |  |  | 58,138 |  |  | $ | 2.94 |
Diluted EPS: |  |  |  |  |
Income from continuing operations available to common shareholders | $ | 170,527 |  |  | 58,138 |  |  |
Effect of dilutive securities: |  |  |  |  |
Share options | — |  |  | 190 |  |  |
Income from continuing operations available to common shareholders | $ | 170,527 |  |  | 58,328 |  |  | $ | 2.92 |
Income from discontinued operations available to common shareholders | $ | 199 |  |  | 58,328 |  |  | $ | 0.01 |
Net income available to common shareholders | $ | 170,726 |  |  | 58,328 |  |  | $ | 2.93 |
| Year Ended December 31, 2014
| Income (numerator) |  | Shares (denominator) |  | Per Share Amount
Basic EPS: |  |  |  |  |
Income from continuing operations | $ | 175,752 |  |  |  |  |
Less: preferred dividend requirements | (23,807 | ) |  |  |  |
Income from continuing operations available to common shareholders | $ | 151,945 |  |  | 54,244 |  |  | $ | 2.80 |
Income from discontinued operations available to common shareholders | $ | 3,881 |  |  | 54,244 |  |  | $ | 0.07 |
Net income available to common shareholders | $ | 155,826 |  |  | 54,244 |  |  | $ | 2.87 |
Diluted EPS: |  |  |  |  |
Income from continuing operations available to common shareholders | $ | 151,945 |  |  | 54,244 |  |  |
Effect of dilutive securities: |  |  |  |  |
Share options | — |  |  | 200 |  |  |
Income from continuing operations available to common shareholders | $ | 151,945 |  |  | 54,444 |  |  | $ | 2.79 |
Income from discontinued operations available to common shareholders | $ | 3,881 |  |  | 54,444 |  |  | $ | 0.07 |
Net income available to common shareholders | $ | 155,826 |  |  | 54,444 |  |  | $ | 2.86 |
| Year Ended December 31, 2013
| Income (numerator) |  | Shares (denominator) |  | Per Share Amount
Basic EPS: |  |  |  |  |
Income from continuing operations | $ | 175,637 |  |  |  |  |
Less: preferred dividend requirements and redemption costs | (23,806 | ) |  |  |  |
Income from continuing operations available to common shareholders | $ | 151,831 |  |  | 48,028 |  |  | $ | 3.16 |
Loss from discontinued operations available to common shareholders | $ | 4,589 |  |  | 48,028 |  |  | $ | 0.10 |
Net income available to common shareholders | $ | 156,420 |  |  | 48,028 |  |  | $ | 3.26 |
Diluted EPS: |  |  |  |  |
Income from continuing operations available to common shareholders | $ | 151,831 |  |  | 48,028 |  |  |
Effect of dilutive securities: |  |  |  |  |
Share options | — |  |  | 186 |  |  |
Income from continuing operations available to common shareholders | $ | 151,831 |  |  | 48,214 |  |  | $ | 3.15 |
Loss from discontinued operations available to common shareholders | $ | 4,589 |  |  | 48,214 |  |  | $ | 0.09 |
Net income available to common shareholders | $ | 156,420 |  |  | 48,214 |  |  | $ | 3.24 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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