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Earnings Per Share ("EPS"): (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Numerator |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  |  |  |  |  |  |  |  | $ 159,023 |  | $ 303,166 |  | $ 239,442 |
Income (loss) from discontinued operations |  |  |  |  |  |  |  |  | 289,936 |  | 63,223 |  | (70,367) |
Net income attributable to noncontrolling interests |  |  |  |  |  |  |  |  | (28,869) |  | (28,963) |  | (12,209) |
Net income attributable to the Company | 144,878 | 38,123 | 218,997 | 18,092 | 174,247 | 43,893 | 133,354 | (14,068) | 420,090 |  | 337,426 |  | 156,866 |
Allocation of earnings to participating securities |  |  |  |  |  |  |  |  | (397) |  | (577) |  | (1,436) |
Numerator for basic earnings per share-net income attributable to common stockholders |  |  |  |  |  |  |  |  | 419,693 |  | 336,849 |  | 155,430 |
Net Income (Loss) Available to Common Stockholders after Allocation to Participating Securities, Diluted |  |  |  |  |  |  |  |  | $ 139,598 |  | $ 134,067 |  | $ 131,628 |
Denominator |  |  |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic earnings per share—weighted average number of common shares outstanding |  |  |  |  |  |  |  |  | 139,598 |  | 134,067 |  | 131,628 |
Effect of dilutive securities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock warrants |  |  |  |  |  |  |  |  | 0 | [1] | 63 | [1] | 0 | [1]
Share and unit based compensation |  |  |  |  |  |  |  |  | 82 | [1] | 18 | [1] | 0 | [1]
Denominator for diluted earnings per share—weighted average number of common shares outstanding |  |  |  |  |  |  |  |  | 139,680 |  | 134,148 |  | 131,628 |
Earnings per common share—basic: (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  |  |  |  |  |  |  |  | $ 1.07 |  | $ 2.07 |  | $ 1.67 |
Discontinued operations |  |  |  |  |  |  |  |  | $ 1.94 |  | $ 0.44 |  | $ (0.49) |
Net income attributable to common stockholders (in dollars per share) | $ 1.03 | $ 0.27 | $ 1.57 | $ 0.13 | $ 1.27 | $ 0.33 | $ 1.00 | $ (0.11) | $ 3.01 |  | $ 2.51 |  | $ 1.18 |
Earnings per common share—diluted: (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  |  |  |  |  |  |  |  | $ 1.06 |  | $ 2.07 |  | $ 1.67 |
Discontinued operations |  |  |  |  |  |  |  |  | $ 1.94 |  | $ 0.44 |  | $ (0.49) |
Net income attributable to common stockholders (in dollars per share) | $ 1.03 | $ 0.27 | $ 1.57 | $ 0.13 | $ 1.27 | $ 0.33 | $ 1.00 | $ (0.11) | $ 3.00 |  | $ 2.51 |  | $ 1.18 |
[1] | (1)The convertible senior notes ("Senior Notes") are excluded from diluted EPS for the years ended December 31, 2012 and 2011 as their effect would be antidilutive. The Senior Notes were paid off in full on March 15, 2012 (See Note 11— Bank and Other Notes Payable).Diluted EPS excludes 184,304, 193,945 and 208,640 convertible preferred units for the years ended December 31, 2013, 2012 and 2011, respectively, as their impact was antidilutive.Diluted EPS excludes 1,203,280 of unexercised stock appreciation rights for the year ended December 31, 2011 as their effect was antidilutive.Diluted EPS excludes 94,685 of unexercised stock options for the year ended December 31, 2011 as their effect was antidilutive.Diluted EPS excludes 935,650 of unexercised stock warrants for the year ended December 31, 2011 as their effect was antidilutive.Diluted EPS excludes 9,845,602 and 10,870,454 and 11,356,922 Operating Partnership units ("OP Units") for the years ended December 31, 2013, 2012 and 2011, respectively, as their effect was antidilutive.

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