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Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares
Jun. 30, 2015
Dec. 31, 2014
Statement of Financial Position [Abstract]    
Preferred Stock, par value $ 0.01 $ 0.01
Preferred Stock, shares authorized 2,000,000 2,000,000
Preferred Stock, shares issued 0 0
Preferred Stock, shares outstanding 0 0
Common Stock, par value    
Common Stock, shares authorized 200,000,000 200,000,000
Common Stock, shares issued 53,367,109 53,154,666
Common Stock, shares outstanding 53,367,109 53,154,666