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Note 7 - Stockholders' Equity (Deficiency) - Fair Value Derivative Assumptions (Details) - Warrant Liabilities [Member] - CAD / shares
6 Months Ended 9 Months Ended
Jun. 30, 2017
Sep. 30, 2017
Average stock price (CAD) (in CAD per share) CAD 0.64 CAD 0.60
Expected dividend yield
Expected stock price volatility 33.00% 32.70%
Risk-free interest rate 0.71% 1.51%
Expected life of warrants (in years) (Year) 1 year 1 year