Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Balance Sheets (Parenthetical)

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Balance Sheets (Parenthetical) - ₪ / shares
Dec. 31, 2017
Dec. 31, 2016
Statement of Financial Position [Abstract]    
Preferred Stock, Par or Stated Value Per Share ₪ 0.01 ₪ 0.01
Preferred Stock, Shares Authorized 10,000,000 10,000,000
Preferred stock, shares issued 0 3,333,471
Preferred stock, shares outstanding 0 3,333,471
Common Stock, Par or Stated Value Per Share ₪ 0.01 ₪ 0.01
Common stock, shares authorized 990,000,000 990,000,000
Common Stock, Shares, Issued 70,087,141 63,577,734
Common stock, shares, outstanding 70,087,141 63,577,734