Leases - Right of use asset (Details) - USD ($)	12 Months Ended
	Nov. 30, 2021	Nov. 30, 2020
Balance, beginning	$ 476,000
Net amortization	(150,000)	$ (112,000)
Previously classified in fixed assets	156,000
Derecognition of Fairbanks warehouse lease	(92,974)	(93,000)
Balance, ending	482,000	476,000
Cumulative Effect, Period of Adoption, Adjusted Balance
Balance, beginning	$ 476,000	681,000
Balance, ending		$ 476,000