Note 3 - Discontinued Operations - Components of Discontinued Operations (Details) - USD ($)	3 Months Ended		9 Months Ended
	Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2023	Aug. 31, 2022	Nov. 30, 2022
Current assets of discontinued operations	$ 389,660		$ 389,660		$ 1,270,683
Other assets of discontinued operations	1,186,785		1,186,785		1,389,226
Current liabilities of discontinued operations	260,954		260,954		275,910
Long-term liabilities of discontinued operations	105,030		105,030		289,168
Loss from operations of discontinued operations	(398,611)	$ (83,944)	(438,081)	$ (233,559)
Discontinued Operations [Member]
Accounts receivables	28,659		28,659		255,508
Inventory	193,351		193,351		1,004,844
Other current assets	167,650		167,650		10,331
Current assets of discontinued operations	389,660		389,660		1,270,683
Property, plant, and equipment, net	1,057,497		1,057,497		1,233,692
Other assets	129,288		129,288		155,534
Other assets of discontinued operations	1,186,785		1,186,785		1,389,226
Accounts payable	3,703		3,703		120,503
Salaries, wages, and commissions	40,620		40,620		81,026
Current portion of long-term debt	161,726		161,726		2,870
Other current liabilities	54,905		54,905		71,511
Current liabilities of discontinued operations	260,954		260,954		275,910
Long-term portion of operating lease liabilities	0		0		1,590
Long-term portion of finance lease liabilities	105,030		105,030		126,720
Long-term debt, excluding current portion	0		0		160,858
Long-term liabilities of discontinued operations	105,030		105,030		$ 289,168
Revenue from external customers	439,000	664,000	2,031,000	1,998,000
Gross Profit	(209,000)	81,000	100,000	271,000
Income (loss) from operations	(390,000)	(69,000)	(399,000)	(195,000)
Loss from operations of discontinued operations	(399,000)	(84,000)	(438,000)	(234,000)
Capital expenditures	0	53,000	16,000	64,000
Depreciation & Amortization	$ 46,000	$ 39,000	$ 127,000	$ 104,000