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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Jun. 30, 2015
Dec. 31, 2014
Statement of Financial Position [Abstract]    
Series A Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Series A Preferred stock, shares authorized (in shares) 5,000,000 5,000,000
Series A Preferred stock, shares issued (in shares) 160,000 160,000
Series A Preferred stock, shares outstanding (in shares) 77,127 78,141
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 195,000,000 195,000,000
Common stock, shares issued (in shares) 94,087,473 93,851,103
Common stock, shares outstanding (in shares) 86,900,952 89,064,582