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Note 6 - Capital Shares - Schedule of Warrants (Details) - $ / shares | 6 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Balance, shares (in shares) | 609,717 | 720,909
Number of warrants (in shares) | 934,590 | 610,787
Balance, weighted average exercise price (in dollars per share) | $ 21.74 | $ 19.51
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 15.35 | $ 21.76
Issued, shares (in shares) | 326,560 |
Issued, weighted average exercise price (in dollars per share) | $ 3.45 |
Expired, shares (in shares) | (1,687) | (110,122)
Expired, weighted average exercise price (in dollars per share) | $ 22.4 | $ 7
Balance, shares (in shares) | 934,590 | 610,787
Balance, weighted average exercise price (in dollars per share) | $ 15.35 | $ 21.76
Warrant One [Member] |  |
Number of warrants (in shares) | 173,614 |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 10.5 |
Warrants, expiry dates | Dec. 31, 2025 |
Balance, shares (in shares) | 173,614 |
Balance, weighted average exercise price (in dollars per share) | $ 10.5 |
Warrant Two [Member] |  |
Number of warrants (in shares) | 15,627 |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 56 |
Warrants, expiry dates | Feb. 28, 2026 |
Balance, shares (in shares) | 15,627 |
Balance, weighted average exercise price (in dollars per share) | $ 56 |
Warrant Three [Member] |  |
Number of warrants (in shares) | 27,399 |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 31.94 |
Warrants, expiry dates | Mar. 31, 2027 |
Balance, shares (in shares) | 27,399 |
Balance, weighted average exercise price (in dollars per share) | $ 31.94 |
Warrant Four [Member] |  |
Number of warrants (in shares) | 391,390 |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 24.64 |
Warrants, expiry dates | Sep. 30, 2027 |
Balance, shares (in shares) | 391,390 |
Balance, weighted average exercise price (in dollars per share) | $ 24.64 |
Warrant Five [Member] |  |
Number of warrants (in shares) | 326,560 |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 3.45 |
Warrants, expiry dates | Sep. 30, 2029 |
Balance, shares (in shares) | 326,560 |
Balance, weighted average exercise price (in dollars per share) | $ 3.45 |

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