Equity and Equity-Based Compensation (Summary of Dividends Declated (Narrative) (Details) (USD $)
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3 Months Ended | 9 Months Ended | 12 Months Ended | ||
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Sep. 30, 2012
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Sep. 30, 2011
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Sep. 30, 2012
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Sep. 30, 2011
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Dec. 31, 2011
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Common stock related: | |||||
Dividends declared per common share (in dollars per share) | $ 0.11 | $ 0.1 | $ 0.33 | $ 0.3 | $ 0.10 |
Dividends annualized target (in dollars per share) | $ 0.44 | ||||
Series A Preferred Stock [Member]
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Preferred stocks: | |||||
Dividends declared per preferred share (in dollars per share) | $ 0.5344 | ||||
Percentage of preferred stock shares | 8.55% | ||||
Series D Preferred Stock [Member]
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Preferred stocks: | |||||
Dividends declared per preferred share (in dollars per share) | $ 0.5281 | ||||
Percentage of preferred stock shares | 8.45% | ||||
Series E Preferred Stock [Member]
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Preferred stocks: | |||||
Dividends declared per preferred share (in dollars per share) | $ 1.01875 | $ 0.5625 | |||
Percentage of preferred stock shares | 9.00% |