Share capital - Narrative (Details) $ in Thousands	3 Months Ended
	Feb. 28, 2025 USD ($) shares	Feb. 28, 2025 USD ($) $ / shares shares	Feb. 29, 2024 USD ($) shares	Feb. 29, 2024 USD ($) $ / shares	Feb. 28, 2025 $ / shares	Nov. 30, 2024 $ / shares shares
Share capital
Stock-based compensation | $	$ (2,258)		$ (1,999)
Non-vested stock options outstanding | shares	14,146,901	14,146,901
Weighted average exercise price options outstanding | $ / shares					$ 1.63
Stock option expense not yet recognized | $	$ 600	$ 600
Exercise of options, Number of shares | shares	263,333		0
Stock options granted, weighted average exercise price | $ / shares		$ 0.71
Reclassification from reserves to share capital | $	$ 100	$ 100
Aggregate intrinsic value, vested options | $	6,000	$ 6,000	$ 0	$ 0
Aggregate intrinsic value, options exercised | $	$ 200		0
Number of shares, conversion | shares	1
Nonvested Options
Share capital
Non-vested stock options outstanding | shares	1,925,004	1,925,004
Weighted average exercise price options outstanding | $ / shares					1.12
RSU and DSU
Share capital
Stock-based compensation | $	$ 1,400		$ 1,500
Stock options
Share capital
Stock options granted | shares	2,125,000
Weighted-average exercise price | $ / shares		$ 1.52
Non-vested stock options outstanding | shares	14,146,901	14,146,901				13,630,234
Weighted average exercise price options outstanding | $ / shares					$ 1.63	$ 1.77
Exercise of options, Number of shares | shares	263,333
Stock options granted, weighted average exercise price | $ / shares		$ 0.71
Employees, consultants and directors
Share capital
Stock options granted | shares	2,125,000		2,775,000
Weighted-average exercise price | $ / shares		1.52		$ 0.59
Stock options granted, expiration period	5 years		5 years
Vesting period	2 years		2 years
Stock options granted, weighted average fair value | $ / shares		$ 0.87		$ 0.27
Directors, employees and service providers | Stock options
Share capital
Stock-based compensation | $	$ 700		$ 300