Note 5 - Accounts Receivable - Expected Credit Losses Activity (Details) - USD ($)	9 Months Ended
	Aug. 31, 2025	Aug. 31, 2024
Balance	$ 108,636	$ 32,137
Provision charged to expense	(63,947)	37,128
Accounts Receivable, Allowance for Credit Loss, Writeoff	0	(12,619)
Balance	$ 44,689	$ 56,646