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Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) - $ / shares
Mar. 31, 2019
Dec. 31, 2018
Statement of Financial Position [Abstract]    
Ordinary shares, par value (in NIS per share) $ 0.25 $ 0.25
Ordinary shares, authorized 10,000,000 10,000,000
Ordinary shares, issued 3,695,174 2,813,087
Ordinary shares, outstanding 3,695,174 2,813,087