CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Unaudited (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Common stock, per share	$ 0.26	$ 0.25
Preferred stock Series H
Preferred stock, per share	637.50	637.50
Preferred stock Series I
Preferred stock, per share	414.06	$ 414.06
Preferred stock Series J
Preferred stock, per share	$ 612.50