CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2016	Dec. 31, 2015
CONSOLIDATED BALANCE SHEETS
Preferred stock and paid in capital, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock and paid in capital, shares authorized	69,900,000	69,900,000
Preferred stock and paid in capital, shares issued	16,350,000	16,350,000
Preferred stock and paid in capital, shares outstanding	16,350,000	16,350,000
Preferred stock liquidation preference (in dollars per share)	$ 25.00	$ 25.00
Common stock and paid in capital, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock and paid in capital, shares authorized	370,100,000	370,100,000
Common stock and paid in capital, shares issued	257,954,902	250,416,757
Common stock and paid in capital, shares outstanding	257,954,902	250,416,757