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Earnings per Share ("EPS"): (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Numerator |  |  |  |  |  |  |  |
Income from continuing operations | $ 42,787 |  | $ 44,925 |  | $ 154,123 |  | $ 99,166 |
(Loss) income from discontinued operations | (1,962) |  | 2,350 |  | 144,047 |  | 80,928 |
Net income attributable to noncontrolling interests | (2,702) |  | (3,382) |  | (22,958) |  | (16,915) |
Net income attributable to the Company | 38,123 |  | 43,893 |  | 275,212 |  | 163,179 |
Allocation of earnings to participating securities | (80) |  | (63) |  | (257) |  | (443) |
Numerator for basic earnings per share—net income attributable to common stockholders | 38,043 |  | 43,830 |  | 274,955 |  | 162,736 |
Numerator for diluted earnings per share-net income (loss) available to common stockholders | $ 38,043 |  | $ 43,830 |  | $ 274,955 |  | $ 162,736 |
Denominator (in shares) |  |  |  |  |  |  |  |
Denominator for basic earnings per share—weighted average number of common shares outstanding | 140,712 |  | 134,220 |  | 139,219 |  | 133,091 |
Effect of dilutive securities:(1) |  |  |  |  |  |  |  |
Stock warrants | 0 | [1] | 64 | [1] | 0 | [1] | 78 | [1]
Share and unit-based compensation plans | 61 | [1] | 46 | [1] | 101 | [1] | 18 | [1]
Denominator for diluted earnings per share—weighted average number of common shares outstanding | 140,773 | [1] | 134,330 | [1] | 139,320 | [1] | 133,187 | [1]
Earnings per common share—basic: (in dollars per share) |  |  |  |  |  |  |  |
Income from continuing operations | $ 0.28 |  | $ 0.31 |  | $ 1.00 |  | $ 0.66 |
Discontinued operations | $ (0.01) |  | $ 0.02 |  | $ 0.97 |  | $ 0.56 |
Net income attributable to common stockholders | $ 0.27 |  | $ 0.33 |  | $ 1.97 |  | $ 1.22 |
Earnings per common share—diluted: (in dollars per share) |  |  |  |  |  |  |  |
Income from continuing operations | $ 0.28 |  | $ 0.31 |  | $ 1.00 |  | $ 0.66 |
Discontinued operations | $ (0.01) |  | $ 0.02 |  | $ 0.97 |  | $ 0.56 |
Net income attributable to common stockholders | $ 0.27 |  | $ 0.33 |  | $ 1.97 |  | $ 1.22 |
[1] | The convertible senior notes ("Senior Notes") are excluded from diluted EPS for the nine months ended September 30, 2012 as their impact was antidilutive. The Senior Notes were paid off in full on March 15, 2012 (See Note 10—Bank and Other Notes Payable).Diluted EPS excludes 184,304 convertible preferred units for the three months ended September 30, 2013 and 2012, and 184,304 and 197,183 convertible preferred units for the nine months ended September 30, 2013 and 2012, respectively, as their impact was antidilutive.Diluted EPS excludes 9,621,313 and 10,769,552 Operating Partnership units ("OP Units") for the three months ended September 30, 2013 and 2012, respectively, and 9,920,197 and 11,069,129 OP Units for the nine months ended September 30, 2013 and 2012, respectively, as their impact was antidilutive.

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