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Consolidated Balance Sheets (Parentheticals) - ₪ / shares
Dec. 31, 2020
Dec. 31, 2019
Statement of Financial Position [Abstract]    
Common stock, par value (in New Shekels per share) ₪ 0.01 ₪ 0.01
Common stock, shares authorized 100,000,000 40,000,000
Common stock, shares, issued 46,100,173 27,150,080
Common stock, shares outstanding 46,100,173 27,150,080