CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Common stock dividend, per share, cash paid	$ 0.14	$ 0.12
Series A Preferred Stock [Member]
Preferred stock (in usd per share)	$ 0.3672	$ 0.2978
Series C Preferred Stock [Member]
Preferred stock (in usd per share)	$ 0	$ 2.36
Series B Preferred Stock [Member]
Preferred stock (in usd per share)	$ 0.105	$ 0