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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - ₪ / shares
Mar. 31, 2018
Dec. 31, 2017
Statement Of Financial Position [Abstract]    
Ordinary shares, par value ₪ 0.01 ₪ 0.01
Ordinary shares, shares authorized 100,000,000 100,000,000
Ordinary shares, issued 15,473,981 13,751,390
Ordinary shares, outstanding 15,473,981 13,751,390