Note 3 - Allowance for Doubtful Accounts - Activity in the Allowance for Doubtful Accounts (Details) - USD ($)	12 Months Ended
	Nov. 30, 2023	Nov. 30, 2022
Balance, beginning	$ 33,288	$ 32,147
Provision (recovery) charged to expense	(1,151)	(3,092)
(Less amounts charged-off)/Recovery	0	4,233
Balance, ending	$ 32,137	$ 33,288