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Per Share Data (Calculation Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended
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Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Earnings Per Share [Abstract] |  |  |  |
Number of common share equivalent securities excluded from the diluted earnings per share calculation | 2,000,000 | 2,200,000 | 2,100,000 | 2,200,000
Income from continuing operations attributable to common shareholders | $ 35,272 | $ 46,938 | $ 75,308 | $ 75,950
Amount allocated to participating securities | (300) | (696) | (653) | (1,335)
Income from continuing operations attributable to common shareholders, net of amount allocated to participating securities | 34,972 | 46,242 | 74,655 | 74,615
Discontinued operations attributable to common shareholders | 0 | 25,234 | 0 | 59,698
Net income attributable to common shareholders – basic | 34,972 | 71,476 | 74,655 | 134,313
Earnings per common share continuing operations | $ 0.40 | $ 0.53 | $ 0.85 | $ 0.86
Earnings per common share from discontinued operations | $ 0.00 | $ 0.29 | $ 0.00 | $ 0.68
Total earnings per common share – basic | $ 0.40 | $ 0.82 | $ 0.85 | $ 1.54
Weighted average number of common shares outstanding – basic | 87,845,000 | 87,191,000 | 87,748,000 | 86,949,000
Income allocated to common units from continuing operations | 314 | 265 | 623 | 541
Income from continuing operations attributable to common shareholders, as adjusted | 35,286 | 46,507 | 75,278 | 75,156
Net income attributable to common shareholders – diluted | $ 35,286 | $ 71,741 | $ 75,278 | $ 134,854
Earnings per common share from continuing operations | $ 0.40 | $ 0.53 | $ 0.85 | $ 0.85
Earnings per common share from discontinued operations | $ 0.00 | $ 0.28 | $ 0.00 | $ 0.68
Total earnings per common share – diluted | $ 0.40 | $ 0.81 | $ 0.85 | $ 1.53
Common share options and share awards granted | 314,000 | 467,000 | 338,000 | 519,000
Common units | 813,000 | 814,000 | 813,000 | 815,000
Weighted average number of common shares outstanding – diluted | 88,972,000 | 88,472,000 | 88,899,000 | 88,283,000

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- Definition This element represents the income or loss from continuing operations attributable to the parent which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests, if any, less the earnings allocated (not distributed) to participating securities under the two-class method to the extent that participating securities may share in earnings as if all of the earnings for the period had been distributed. + References No definition available. + Details
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