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Earnings per Share - Narrative (Details) (USD $)	9 Months Ended
Earnings per Share - Narrative (Details) (USD $)	Sep. 30, 2011
Series D Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, dividend rate, percentage	9.00%
Preferred stock, par value	$ 0.01
Assumed conversion of preferred stock	1,875,000
Common Stock [Member]
Class of Stock [Line Items]
Number of common shares issued per preferred share	1

- Definition

Number of shares issued for each share of convertible preferred stock that is converted.

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- Definition

Face amount or stated value per share of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer); generally not indicative of the fair market value per share.

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