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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Sep. 30, 2018
Dec. 31, 2017
Statement of Financial Position [Abstract]    
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, authorized (in shares) 60,000,000 60,000,000
Common stock, issued (in shares) 21,530,470 19,631,266
Treasury Stock, Shares (59,174) 0