Note 18 - Segment Information - Segment Reporting Information (Details) - USD ($)		3 Months Ended
		Feb. 28, 2025	Feb. 29, 2024	Nov. 30, 2024
Revenue from external customers		$ 5,140,955	$ 5,723,394
Gross profit		1,496,509	1,473,524
Operating Expense		1,494,024	1,853,606
Income (loss) from operations		2,485	(380,082)
Income tax expense (benefit)		(14,652)	(112,777)
Total Assets		21,004,594		$ 21,240,684
Depreciation & Amortization		208,072	208,116
Interest expense		75,688	165,639
Engineering		85,230	160,353
Selling		349,977	462,759
General and administrative (G&A)		1,058,817	1,230,494
Operating Segments [Member]
Revenue from external customers	[1]	5,141,000	5,723,000
Gross profit	[1]	1,496,000	1,473,000
Operating Expense	[1]	1,494,000	1,854,000
Income (loss) from operations	[1]	2,000	(380,000)
Income (loss) before tax	[1]	(70,000)	(537,000)
Income tax expense (benefit)		(15,000)	(113,000)
Total Assets	[1]	21,005,000	23,216,000
Capital expenditures	[1]	83,000	281,000
Depreciation & Amortization	[1]	208,000	208,000
Interest expense		76,000	166,000
Engineering		85,000	160,000
Selling		350,000	463,000
General and administrative (G&A)		1,059,000	1,231,000
Operating Segments [Member] | Agricultural Products [Member]
Revenue from external customers		2,948,000	4,236,000
Gross profit		788,000	1,141,000
Operating Expense		1,167,000	1,568,000
Income (loss) from operations		(379,000)	(426,000)
Income (loss) before tax		(438,000)	(574,000)
Income tax expense (benefit)		(92,000)	(121,000)
Total Assets		18,857,000	20,470,000
Capital expenditures		67,000	184,000
Depreciation & Amortization		148,000	148,000
Interest expense		61,000	153,000
Engineering		85,000	160,000
Selling		206,000	386,000
General and administrative (G&A)		876,000	1,022,000
Operating Segments [Member] | Modular Buildings [Member]
Revenue from external customers		2,193,000	1,487,000
Gross profit		708,000	332,000
Operating Expense		327,000	286,000
Income (loss) from operations		381,000	46,000
Income (loss) before tax		368,000	37,000
Income tax expense (benefit)		77,000	8,000
Total Assets		2,148,000	2,746,000
Capital expenditures		16,000	97,000
Depreciation & Amortization		60,000	60,000
Interest expense		15,000	13,000
Engineering		0	0
Selling		144,000	77,000
General and administrative (G&A)		183,000	209,000
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Operating Expense		146,000	166,000
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Agricultural Products [Member]
Operating Expense		101,000	136,000
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Modular Buildings [Member]
Operating Expense		$ 45,000	$ 30,000

[1] The consolidated total in the tables is a sum of segment figures and may not tie to actual figures in the condensed consolidated financial statements due to rounding.