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Derivative Warrants Liabilities (Tables)
 12 Months Ended
Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
Weighted average of inputs 

As of

February 18,

   As of
December 31,		 
   2019*   2018 
Share price  $0.34   $0.33 
Exercise price  $1.08   $1.02 
Expected volatility   52.1%   73.7%
Risk-free interest   0.45%   0.48%
Dividend yield   0%   0%
Expected life of up to (years)   0.87    0.16 
*On February 18, 2019, the Company modified the expiration date of 9,752,984 and 2,028,568 outstanding Series B warrants from February 28, 2019 and May 16, 2019, respectively, both to December 31, 2019.
Share-based Payment Arrangement, Activity [Table Text Block]
Warrants  Issuance Date  Outstanding and Exercisable as of
December 31,
2018		   Exercise Price
Per Share		   Exercisable
Through
               
Series B (11B(a))  Mar-2016   9,752,984     NIS4 ($1.53)  December 2019
Series B (11B(a))  May-2016   2,028,568     NIS4 ($1.53)  December 2019
Series E (11B(a))  Oct-2016   2,687,197     NIS3 ($0.86)  October 2019