INTERIM CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Jun. 30, 2018
Dec. 31, 2017
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 20,669,528 18,976,169
Common stock, shares outstanding 20,669,528 18,976,169