Note 11 - Capital Stock - Share Purchase Warrants Assumptions (Details) - October 2018 Warrants [Member]	Oct. 03, 2018
Measurement Input, Risk Free Interest Rate [Member]
Warrants, Expected Risk Free Interest Rate	0.029
Measurement Input, Price Volatility [Member]
Warrants, Expected Risk Free Interest Rate	0.633
Measurement Input, Expected Term [Member]
Warrants, Expected Risk Free Interest Rate	2.5
Measurement Input, Expected Dividend Rate [Member]
Warrants, Expected Risk Free Interest Rate	0