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Dividend Payments on our 10 3/4% Series B Cumulative Exchangeable Redeemable Preferred Stock (Details) (USD $)	1 Months Ended		3 Months Ended
	Apr. 15, 2013	Apr. 16, 2012	Mar. 31, 2013
Dividend Payments On Our Cumulative Exchangeable Redeemable Preferred Stock (Textual) [Abstract]
Dividends on the Series B preferred stock			10.75%
Liquidation preference per share			$ 1,000
Cash dividends (per share)	$ 26.875	$ 26.875
Series B preferred stock in arrears and unpaid			1 year

The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.

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