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Consolidated Balance Sheets (Parenthetical) - $ / shares
Dec. 31, 2017
Dec. 31, 2016
Statement of Financial Position [Abstract]    
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 25,000,000 25,000,000
Common stock, shares issued 6,881,794 6,714,915
Common stock, shares outstanding 6,881,794 6,714,915