Note 3 - Discontinued Operations - Components of Discontinued Operations (Details) - USD ($)	3 Months Ended		9 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	Aug. 31, 2025	Aug. 31, 2024	Nov. 30, 2024
Loss from discontinued operations before income taxes	$ 0	$ (35,919)	$ 0	$ (123,849)
Total Assets	$ 21,815,740		$ 21,815,740		$ 21,240,684
Discontinued Operations [Member] | Tools [Member]
Revenue from external customers		0		0
Gross Profit (loss)		(22,000)		(74,000)
Operating Expense (Income)		0		9,000
Loss from operations		(22,000)		(83,000)
Loss from discontinued operations before income taxes		(36,000)		(124,000)
Total Assets		1,024,000		1,024,000
Capital expenditures		0		0
Depreciation & Amortization		$ 7,000		$ 22,000