CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Common stock dividend, per share, cash paid	$ 0.40	$ 0.20	$ 0.20
Series B Preferred Stock [Member]
Preferred stock, per share	$ 0	$ 0	$ 8.33
Series C Preferred Stock
Preferred stock, per share	$ 50	$ 50	$ 50