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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, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Numerator |  |  |  |  |  |  |  |
Income from continuing operations | $ 38,744 |  | $ 49,669 |  | $ 76,373 |  | $ 161,058 |
(Loss) income from discontinued operations | 0 |  | (8,844) |  | 0 |  | 137,112 |
Net income attributable to noncontrolling interests | (2,830) |  | (2,702) |  | (6,552) |  | (22,958) |
Net income attributable to the Company | 35,914 |  | 38,123 |  | 69,821 |  | 275,212 |
Allocation of earnings to participating securities - basic | (122) |  | (80) |  | (373) |  | (257) |
Allocation of earnings to participating securities - diluted | (122) |  | (80) |  | (373) |  | (257) |
Numerator for basic earnings per share—net income attributable to common stockholders | 35,792 |  | 38,043 |  | 69,448 |  | 274,955 |
Numerator for diluted earnings per share-net income (loss) available to common stockholders | $ 35,792 |  | $ 38,043 |  | $ 69,448 |  | $ 274,955 |
Denominator (in shares) |  |  |  |  |  |  |  |
Denominator for basic earnings per share—weighted average number of common shares outstanding | 140,916 |  | 140,712 |  | 140,859 |  | 139,219 |
Effect of dilutive securities: |  |  |  |  |  |  |  |
Share and unit-based compensation plans | 144 | [1] | 61 | [1] | 116 | [1] | 101 | [1]
Denominator for diluted earnings per share—weighted average number of common shares outstanding | 141,060 | [1] | 140,773 | [1] | 140,975 | [1] | 139,320 | [1]
Earnings per common share—basic: (in dollars per share) |  |  |  |  |  |  |  |
Income from continuing operations | $ 0.25 |  | $ 0.33 |  | $ 0.49 |  | $ 1.05 |
Discontinued operations | $ 0.00 |  | $ (0.06) |  | $ 0.00 |  | $ 0.92 |
Net income attributable to common stockholders | $ 0.25 |  | $ 0.27 |  | $ 0.49 |  | $ 1.97 |
Earnings per common share—diluted: (in dollars per share) |  |  |  |  |  |  |  |
Income from continuing operations | $ 0.25 |  | $ 0.33 |  | $ 0.49 |  | $ 1.05 |
Discontinued operations | $ 0.00 |  | $ (0.06) |  | $ 0.00 |  | $ 0.92 |
Net income attributable to common stockholders | $ 0.25 |  | $ 0.27 |  | $ 0.49 |  | $ 1.97 |
[1] | Diluted EPS excludes 184,304 convertible preferred units for the three and nine months ended September 30, 2014 and 2013 as their impact was antidilutive.Diluted EPS excludes 10,110,716 and 9,621,313 Operating Partnership units ("OP Units") for the three months ended September 30, 2014 and 2013, respectively, and 10,072,321 and 9,920,197 OP Units for the nine months ended September 30, 2014 and 2013, respectively, as their impact was antidilutive.

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