Equity Transactions (Tables)

12 Months Ended

Dec. 31, 2011

Equity Transactions [Abstract]

Cumulative preferred securities outstanding

Preferred Securities Offerings

As of December 31, 2011, the Company, has the following cumulative preferred securities outstanding:

Description	Issue Date	Shares Authorized	Shares Outstanding	Liquidation Preference
7.125% Series H	April 2011	8,000,000 shares	2,950,000 shares	$	73,750
4.875% Series G	July 2006	5,980,000 shares	178,249 shares	$	4,456