Note 3 - Discontinued Operations - Components of Discontinued Operations (Details) - USD ($)		3 Months Ended		9 Months Ended
		Aug. 31, 2024	Aug. 31, 2023	Aug. 31, 2024	Aug. 31, 2023	Nov. 30, 2023
Current assets of discontinued operations		$ 22,837		$ 22,837		$ 31,958
Other assets of discontinued operations		1,001,640		1,001,640		1,023,566
Current liabilities of discontinued operations		175,279		175,279		186,789
Loss before tax		(35,919)	$ (398,611)	(123,849)	$ (438,081)
Discontinued Operations [Member]
Inventory		18,013		18,013		18,013
Other current assets		4,824		4,824		13,945
Current assets of discontinued operations		22,837		22,837		31,958
Property, plant, and equipment, net		1,001,640		1,001,640		1,023,566
Other assets of discontinued operations		1,001,640		1,001,640		1,023,566
Accounts payable		64		64		3,539
Current portion of long-term debt		158,363		158,363		160,599
Other current liabilities		16,852		16,852		22,651
Current liabilities of discontinued operations		175,279		175,279		$ 186,789
Discontinued Operations [Member] | Tools [Member]
Revenue from external customers		0	439,000	0	2,031,000
Gross (Loss)		(22,000)	(209,000)	(74,000)	100,000
Operating Expense		0	181,000	9,000	499,000
Loss from operations		(22,000)	(390,000)	(83,000)	(399,000)
Loss before tax		(36,000)	(399,000)	(124,000)	(438,000)
Total Assets		1,024,000	1,576,000	1,024,000	1,576,000
Capital expenditures	[1]	0	0	0	16,000
Depreciation & Amortization		$ 7,000	$ 46,000	$ 22,000	$ 127,000

[1] FY 2022 capital expenditures include $166,000 of finance leased assets.