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Note 13 - Capital Stock - Share Purchase Warrants Assumptions (Details) - October 2018 Warrants [Member]
Oct. 03, 2018
yr
Measurement Input, Risk Free Interest Rate [Member]  
Warrants, measurement input 0.029
Measurement Input, Price Volatility [Member]  
Warrants, measurement input 0.633
Measurement Input, Expected Term [Member]  
Warrants, measurement input 2.5
Measurement Input, Expected Dividend Rate [Member]  
Warrants, measurement input 0