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

Financial Instruments (Details 2)

v3.8.0.1
Financial Instruments (Details 2) - Option pricing model [Member] - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Disclosure of detailed information about financial instruments [line items]    
Dividend yield $ 0 $ 0
Bottom of range [Member]    
Disclosure of detailed information about financial instruments [line items]    
Expected volatility 48.92% 59.03%
Risk-free interest 1.46% 0.90%
Expected life 2 months 8 days 1 year 2 months 8 days
Top of range [Member]    
Disclosure of detailed information about financial instruments [line items]    
Expected volatility 98.06% 91.41%
Risk-free interest 2.16% 1.77%
Expected life 4 years 6 months 18 days 4 years 3 months 11 days