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Note 9 - Capital Stock and Reserve - Weighted Average Assumptions (Details) - Agent warrants [member]
Dec. 31, 2023
Mar. 31, 2023
Fair value of warrant [member]    
Statement Line Items [Line Items]    
Assumptions 5.67 3.81
Exercise Price [member]    
Statement Line Items [Line Items]    
Assumptions 6.25 10
Expected life [member]    
Statement Line Items [Line Items]    
Assumptions 5 2
Interest rate, measurement input [member]    
Statement Line Items [Line Items]    
Assumptions 0.0414 0.033
Historical volatility for shares, measurement input [member]    
Statement Line Items [Line Items]    
Assumptions 1.13 1.20