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

Stock Options (Details 1)

Stock Options (Details 1) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dividend yield   $ 0
Expected volatility 100.00% 100.00% [1]
Risk-free interest rate 1.00% 1.00%
Expected term (years) 2 years 6 months 2 years 6 months [2]
Exercise price   $ 0.0026
Stock price [3]   $ 0.15
[1] Due to the low trading volume of the Company's Common Stock, the expected volatility was based on the historical volatility of the share price of other public companies that operate in the same industry sector as the Company.
[2] Due to the fact that the Company does not have sufficient historical exercise data, the expected term was determined based on the "simplified method" in accordance with SEC Staff Accounting Bulletin No. 110.
[3] The Common Stock price, per share reflects the Company's management's estimation of the fair value per share of Common Stock. In reaching its estimation for 2016 grants, management considered, among other things, the valuation of the issuance of the shares under the private placement (see Note 11F above)