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Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares
Sep. 30, 2017
Dec. 31, 2016
Preferred stock, par value (in dollars per share) $ 0.0001000000 $ 0.0001000000
Preferred stock, authorized (in shares) 5,000,000 5,000,000
Preferred stock, shares issued (in shares) 0.00000 0.00000
Common stock, par value (in dollars per share) $ 0.0001000000 $ 0.0001000000
Common stock, authorized (in shares) 100,000,000 100,000,000
Common stock, shares issued (in shares) 16,433,415.000000 24,223,191.000000
Treasury stock, shares (in shares) 0 7,736,255.000000