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Earnings Per Share ("EPS"): (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Numerator |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  |  |  |  |  |  |  |  | $ 297,024 | $ 243,946 | $ 38,770
Income (loss) from discontinued operations |  |  |  |  |  |  |  |  | 69,365 | (74,871) | (10,350)
Net income attributable to noncontrolling interests |  |  |  |  |  |  |  |  | (28,963) | (12,209) | (3,230)
Net income attributable to the Company | 174,247 | 43,893 | 133,354 | (14,068) | 163,107 | 12,941 | (19,216) | 34 | 337,426 | 156,866 | 25,190
Allocation of earnings to participating securities |  |  |  |  |  |  |  |  | (577) | (1,436) | (2,615)
Numerator for basic earnings per share-net income attributable to common stockholders |  |  |  |  |  |  |  |  | 336,849 | 155,430 | 22,575
Numerator for diluted earnings per share-net income attributable to common stockholders |  |  |  |  |  |  |  |  | $ 336,849 | $ 155,430 | $ 22,575
Denominator |  |  |  |  |  |  |  |  |  |  |
Denominator for basic earnings per share-weighted average number of common shares outstanding |  |  |  |  |  |  |  |  | 134,067,000 | 131,628,000 | 120,346,000
Effect of dilutive securities |  |  |  |  |  |  |  |  |  |  |
Stock warrants |  |  |  |  |  |  |  |  | 63,000 |  |
Share and unit based compensation |  |  |  |  |  |  |  |  | 18,000 |  |
Denominator for diluted earnings per share-weighted average number of common shares outstanding |  |  |  |  |  |  |  |  | 134,148,000 | 131,628,000 | 120,346,000
Earnings per common share-basic: |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations (in dollars per share) |  |  |  |  |  |  |  |  | $ 2.03 | $ 1.70 | $ 0.27
Discontinued operations (in dollars per share) |  |  |  |  |  |  |  |  | $ 0.48 | $ (0.52) | $ (0.08)
Net income attributable to common stockholders | $ 1.27 | $ 0.33 | $ 1.00 | $ (0.11) | $ 1.23 | $ 0.10 | $ (0.15) |  | $ 2.51 | $ 1.18 | $ 0.19
Earnings per common share-diluted: |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations (in dollars per share) |  |  |  |  |  |  |  |  | $ 2.03 | $ 1.70 | $ 0.27
Discontinued operations (in dollars per share) |  |  |  |  |  |  |  |  | $ 0.48 | $ (0.52) | $ (0.08)
Net income attributable to common stockholders | $ 1.27 | $ 0.33 | $ 1.00 | $ (0.11) | $ 1.23 | $ 0.10 | $ (0.15) |  | $ 2.51 | $ 1.18 | $ 0.19

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