CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
Mar. 31, 2015
Dec. 31, 2014
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
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 227,031,104 224,881,192
Common stock and paid in capital, shares outstanding 227,031,104 224,881,192