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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Series A Preferred stock, par value (in dollars per share) $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare
Series A Preferred stock, shares authorized (in shares) 5,000,000us-gaap_PreferredStockSharesAuthorized 5,000,000us-gaap_PreferredStockSharesAuthorized
Series A Preferred stock, shares issued (in shares) 160,000us-gaap_PreferredStockSharesIssued 160,000us-gaap_PreferredStockSharesIssued
Series A Preferred stock, shares outstanding (in shares) 78,141us-gaap_PreferredStockSharesOutstanding 79,620us-gaap_PreferredStockSharesOutstanding
Common stock, par value (in dollars per share) $ 0.01us-gaap_CommonStockParOrStatedValuePerShare $ 0.01us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized (in shares) 195,000,000us-gaap_CommonStockSharesAuthorized 195,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued (in shares) 93,851,103us-gaap_CommonStockSharesIssued 93,496,798us-gaap_CommonStockSharesIssued
Common stock, shares outstanding (in shares) 89,064,582us-gaap_CommonStockSharesOutstanding 88,710,277us-gaap_CommonStockSharesOutstanding