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Note 9 - Capital Stock and Reserve - Summary of Warrant Transactions (Details)
 9 Months Ended 12 Months Ended
Dec. 31, 2023
$ / shares
shares
Dec. 31, 2023
$ / shares
$ / shares
shares
Mar. 31, 2023
$ / shares
shares
Dec. 31, 2023
$ / shares
Unit warrants expiring December 2, 2023 [member]        
Statement Line Items [Line Items]        
warrants, exercise price (in CAD per share) | $ / shares $ 6.5 $ 6.5 $ 6.5  
Balances, number of warrants (in shares) 24,000 24,000 47,800  
Issued, number of warrants (in shares) 0 0 0  
Exercised, number of warrants (in shares) 0 0 (23,800)  
Cancelled, number of warrants (in shares) (24,000) (24,000) 0  
Balances, number of warrants (in shares) 0 0 24,000  
Unit warrants one [member]        
Statement Line Items [Line Items]        
warrants, exercise price (in CAD per share) | $ / shares     $ 3.75  
Balances, number of warrants (in shares) 0 0 53,778  
Issued, number of warrants (in shares)     0  
Exercised, number of warrants (in shares)     (53,778)  
Cancelled, number of warrants (in shares)     0  
Balances, number of warrants (in shares)     0  
Agent warrants expiring July 19, 2024 [member]        
Statement Line Items [Line Items]        
warrants, exercise price (in CAD per share) | $ / shares $ 10 $ 10 $ 10  
Balances, number of warrants (in shares) 5,765 5,765 0  
Issued, number of warrants (in shares) 0 0 5,765  
Exercised, number of warrants (in shares) 0 0 0  
Cancelled, number of warrants (in shares) 0 0 0  
Balances, number of warrants (in shares) 5,765 5,765 5,765  
Unit warrants expiring August 24, 2028 [member]        
Statement Line Items [Line Items]        
warrants, exercise price (in CAD per share) | $ / shares       $ 6.25
Balances, number of warrants (in shares) 0 0    
Issued, number of warrants (in shares) 800,000 800,000    
Exercised, number of warrants (in shares) 0 0    
Cancelled, number of warrants (in shares) 0 0    
Balances, number of warrants (in shares) 800,000 800,000 0  
Unit warrants two [member]        
Statement Line Items [Line Items]        
warrants, exercise price (in CAD per share) | $ / shares     $ 5  
Balances, number of warrants (in shares) 0 0 121,600  
Issued, number of warrants (in shares)     0  
Exercised, number of warrants (in shares)     (121,600)  
Cancelled, number of warrants (in shares)     0  
Balances, number of warrants (in shares)     0  
Agent warrants expiring August 21, 2028 [member]        
Statement Line Items [Line Items]        
warrants, exercise price (in CAD per share) | $ / shares       $ 6.25
Balances, number of warrants (in shares) 0 0    
Issued, number of warrants (in shares) 40,000 40,000    
Exercised, number of warrants (in shares) 0 0    
Cancelled, number of warrants (in shares) 0 0    
Balances, number of warrants (in shares) 40,000 40,000 0  
Agent warrants [member]        
Statement Line Items [Line Items]        
Balances, number of warrants (in shares) 5,765 5,765 0  
Issued, number of warrants (in shares) 40,000 40,000 5,765  
Exercised, number of warrants (in shares) 0 0 0  
Cancelled, number of warrants (in shares) 0 0 0  
Balances, number of warrants (in shares) 45,765 45,765 5,765  
Balances, warrants, weighted average exercise price (in CAD per share) | $ / shares $ 10   $ 0  
Issued, warrants, weighted average exercise price (in dollars per share) | (per share)   $ 6.25 10  
Exercised, warrants, weighted average exercise price (in CAD per share) | $ / shares 0   0  
Cancelled, warrants, weighted average exercise price (in CAD per share) | $ / shares 0 $ 0 0  
Balances, warrants, weighted average exercise price (in CAD per share) | $ / shares $ 0   $ 10  
warrant, weighted average remaining life (years) (Year) 4 years 1 month 17 days 4 years 1 month 17 days 1 year 3 months 18 days  
Unit warrants expiring October 29, 2022 [member]        
Statement Line Items [Line Items]        
warrants, exercise price (in CAD per share) | $ / shares     $ 12.5  
Balances, number of warrants (in shares) 0 0 36,166  
Issued, number of warrants (in shares)     0  
Exercised, number of warrants (in shares)     (3,572)  
Cancelled, number of warrants (in shares)     (32,594)  
Balances, number of warrants (in shares)     0  
Unit warrants [member]        
Statement Line Items [Line Items]        
Balances, number of warrants (in shares) 24,000 24,000 281,344  
Issued, number of warrants (in shares) 800,000 800,000 0  
Exercised, number of warrants (in shares) 0 0 (212,750)  
Cancelled, number of warrants (in shares) (24,000) (24,000) (44,594)  
Balances, number of warrants (in shares) 800,000 800,000 24,000  
Balances, warrants, weighted average exercise price (in CAD per share) | $ / shares $ 6.5   $ 5.98  
Issued, warrants, weighted average exercise price (in dollars per share) | (per share)   $ 6.25 0  
Exercised, warrants, weighted average exercise price (in CAD per share) | $ / shares 0   4.98  
Cancelled, warrants, weighted average exercise price (in CAD per share) | $ / shares 6.5 $ 6.5 10.48  
Balances, warrants, weighted average exercise price (in CAD per share) | $ / shares $ 6.25   $ 6.5  
warrant, weighted average remaining life (years) (Year) 4 years 7 months 24 days 4 years 7 months 24 days 8 months 1 day  
Unit warrants expiring December 15, 2022 [member]        
Statement Line Items [Line Items]        
warrants, exercise price (in CAD per share) | $ / shares     $ 5  
Balances, number of warrants (in shares) 0 0 22,000  
Issued, number of warrants (in shares)     0  
Exercised, number of warrants (in shares)     (10,000)  
Cancelled, number of warrants (in shares)     (12,000)  
Balances, number of warrants (in shares)     0