Note 6 - Capital Shares - Schedule of Warrants (Details) - $ / shares	9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Number of warrants (in shares)	934,590	609,717
Balance (in shares)	609,717	720,909
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 15.35	$ 21.74
Balance (in dollars per share)	$ 21.74	$ 19.51
Issued, shares (in shares)	326,560
Issued, weighted average exercise price (in dollars per share)	$ 3.45
Expired, shares (in shares)	(1,687)	(111,192)
Expired, weighted average exercise price (in dollars per share)	$ 22.4	$ 7.26
Balance (in shares)	934,590	609,717
Balance (in dollars per share)	$ 15.35	$ 21.74
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 (in shares)	173,614
Balance (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 (in shares)	15,627
Balance (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 (in shares)	27,399
Balance (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 (in shares)	391,390
Balance (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	Oct. 31, 2029
Balance (in shares)	326,560
Balance (in dollars per share)	$ 3.45