Annual report pursuant to Section 13 and 15(d)

Note 2 - Significant Accounting Policies (Details Textual)

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Note 2 - Significant Accounting Policies (Details Textual)
12 Months Ended
Dec. 31, 2022
USD ($)
Segment
Dec. 31, 2022
CAD ($)
Dec. 31, 2021
USD ($)
Accumulated deficit $ (464,330,000)   $ (422,507,000)
Cash and investment 47,000,000.0    
Working capital $ 37,200,000    
Number of operating segments | Segment 1    
Maximum [Member]      
CDIC insures deposits   $ 100,000  
FDIC insures deposits $ 250,000