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Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares
Sep. 30, 2016
Dec. 31, 2015
Statement of Financial Position [Abstract]    
Preferred stock, par value, in dollars per share $ 0.01 $ 0.01
Preferred stock, shares authorized 1,000,000 1,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value, in dollars per share $ 0.01 $ 0.01
Common stock, shares authorized 150,000,000 150,000,000
Common stock, shares issued 80,264,462 83,814,809
Common stock, shares outstanding 80,264,462 83,814,809