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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 (usd per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (shares) 5,000,000 5,000,000
Preferred stock, shares issued (shares) 0 0
Preferred stock, shares outstanding (shares) 0 0
Common stock, par value (usd per share) $ 0.01 $ 0.01
Common stock, shares authorized (shares) 100,000,000 100,000,000
Common stock, shares issued (shares) 26,475,720 26,235,824
Common stock, shares outstanding (shares) 26,475,720 26,235,824