Financial instruments - Narrative (Details)	12 Months Ended
	Nov. 30, 2023 USD ($)	Nov. 30, 2023 CAD ($)	Nov. 30, 2022 USD ($)
Cash	$ 2,590,000		$ 2,573,000
Accounts receivable	33,000		$ 17,000
Financial assets and liabilities that were measured and recognized at fair value	$ 0
10% change in the US-Canadian exchange rate
Cash		$ 4,000
Accounts receivable		14,000
Accounts payable		$ 267,000
Change in foreign exchange rate	10.00%	10.00%
Foreign exchange loss	$ 18,000
Change in interest rate	1.00%	1.00%