CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Preferred stock, par value	$ 100	$ 100
Preferred stock, shares authorized	100,000	100,000
Preferred stock liquidation preference (in dollars per share)	$ 10,000	$ 10,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	228,000,000	128,000,000
Common stock, shares issued	81,252,676	71,568,936
Treasury stock, shares	455,689	262,070
Series A Preferred Stock
Preferred stock, shares issued	3,915	7,945
Series B Preferred Stock
Preferred stock, shares issued	27,551	32,500