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INTERIM CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Mar. 31, 2019
Dec. 31, 2018
Common stock, par value (in dollars per share) $ 0.00005 $ 0.00005
Common stock, shares Authorized 100,000,000 100,000,000
Common stock, shares Issued 21,490,610 20,757,816
Common stock, shares outstanding 21,490,610 20,757,816