CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) (USD $)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Common stock dividend, per share, cash paid	$ 0.24	$ 0.20
Series C Preferred Stock
Preferred stock, per share	$ 2.36	$ 12.50
Series A Preferred Stock [Member]
Preferred stock, per share	$ 0.6650	$ 0