Note 2 - Allowance for Doubtful Accounts - Activity in the Allowance for Doubtful Accounts (Details) - USD ($)	12 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Balance, beginning	$ 38,188	$ 51,175
Provision (recovery) charged to expense	(7,722)	(4,160)
(Less amounts charged-off)/Recovery	4,233	(8,827)
Balance, ending	$ 34,699	$ 38,188