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CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - $ / shares
Jun. 30, 2020
Dec. 31, 2019
CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited)    
Common stock, shares authorized 100,000,000 100,000,000
Common stock, par value $ 0.001 $ 0.001
Common stock, shares issued 6,664,976 3,339,541
Common stock, shares outstanding 6,664,815 3,339,380
Treasury stock, shares 161 161