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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) $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock and paid in capital, shares authorized 69,900,000us-gaap_PreferredStockSharesAuthorized 69,900,000us-gaap_PreferredStockSharesAuthorized
Preferred stock and paid in capital, shares issued 16,350,000us-gaap_PreferredStockSharesIssued 16,350,000us-gaap_PreferredStockSharesIssued
Preferred stock and paid in capital, shares outstanding 16,350,000us-gaap_PreferredStockSharesOutstanding 16,350,000us-gaap_PreferredStockSharesOutstanding
Common stock and paid in capital, par value (in dollars per share) $ 0.01us-gaap_CommonStockParOrStatedValuePerShare $ 0.01us-gaap_CommonStockParOrStatedValuePerShare
Common stock and paid in capital, shares authorized 370,100,000us-gaap_CommonStockSharesAuthorized 370,100,000us-gaap_CommonStockSharesAuthorized
Common stock and paid in capital, shares issued 227,031,104us-gaap_CommonStockSharesIssued 224,881,192us-gaap_CommonStockSharesIssued
Common stock and paid in capital, shares outstanding 227,031,104us-gaap_CommonStockSharesOutstanding 224,881,192us-gaap_CommonStockSharesOutstanding