CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2013
Issuance of common stock dividends per share (in dollars per share)	$ 0.36
Common stock dividends and dividends payable, per share (in dollars per share)	$ 1.41	$ 0.10
Series A Cumulative Redeemable Preferred Stock
Preferred stock dividends declared (in dollars per share)		0.50
Series C Cumulative Convertible Redeemable Preferred Stock
Series C preferred dividends and dividends payable, per share (in dollars per share)		0.786
Series D Cumulative Redeemable Preferred Stock
Preferred stock dividends declared (in dollars per share)	$ 2.00	$ 2.00