Share capital - Stock options plans and changes (Details) - $ / shares	3 Months Ended	6 Months Ended
	Feb. 29, 2024	May 31, 2025
Share capital
Number of options, Exercised	0	(350,000)
Weighted average exercise price, Exercised		$ 0.82
Balance - end of period, number of options		12,015,234
Balance - end of period, weighted average exercise price		$ 1.48
Stock options
Share capital
Balance - beginning of the year, number of options		13,630,234
Balance - beginning of the year, weighted average exercise price		$ 1.77
Number of options, Granted		2,125,000
Weighted average exercise price, Granted		$ 1.52
Number of options, Exercised		(350,000)
Weighted average exercise price, Exercised		$ 0.82
Number of options, Expired		(3,390,000)
Weighted average exercise price, Expired		$ 2.75
Balance - end of period, number of options		12,015,234
Balance - end of period, weighted average exercise price		$ 1.48