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Equity and Noncontrolling Interests - Cumulative Redeemable Preferred Stock (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 8-1/2% Series A Cumulative Redeemable Shares [Member]
Equity And Noncontrolling Interests [Line Items]
Outstanding Shares	868	868	868
Liquidation Preference	$ 50	$ 50	$ 50.00
Optional Redemption Date			Jan. 10, 2026
Redemption Price			$ 50.00
Stated Dividend Yield			8.50%
Approximate Dividend Rate			$ 4.25

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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- Definition

The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer.

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