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Note 7 - Capital Stock and Reserves - Weighted Average Assumptions (Details)
Sep. 30, 2024
Mar. 31, 2024
Unit warrants [member] | Fair value of option [member]    
Statement Line Items [Line Items]    
Assumptions 1.94 3.77
Unit warrants [member] | Exercise Price [member]    
Statement Line Items [Line Items]    
Assumptions 4 4
Unit warrants [member] | Expected life [member]    
Statement Line Items [Line Items]    
Assumptions 2 2
Unit warrants [member] | Interest rate, measurement input [member]    
Statement Line Items [Line Items]    
Assumptions 0.043 0.035
Unit warrants [member] | Historical volatility for shares, measurement input [member]    
Statement Line Items [Line Items]    
Assumptions 1 1.11
Unit warrants [member] | Dividend yield [member]    
Statement Line Items [Line Items]    
Assumptions 0 0
Agent warrants [member] | Fair value of option [member]    
Statement Line Items [Line Items]    
Assumptions 1.96 7.95
Agent warrants [member] | Exercise Price [member]    
Statement Line Items [Line Items]    
Assumptions 4 8.09
Agent warrants [member] | Expected life [member]    
Statement Line Items [Line Items]    
Assumptions 2 4.78
Agent warrants [member] | Interest rate, measurement input [member]    
Statement Line Items [Line Items]    
Assumptions 0.043 0.0409
Agent warrants [member] | Historical volatility for shares, measurement input [member]    
Statement Line Items [Line Items]    
Assumptions 1.01 1.13
Agent warrants [member] | Dividend yield [member]    
Statement Line Items [Line Items]    
Assumptions 0 0