Note 18 - Segment Information - Segment Reporting Information (Details) - USD ($)		3 Months Ended		9 Months Ended
		Aug. 31, 2024	Aug. 31, 2023	Aug. 31, 2024	Aug. 31, 2023	Nov. 30, 2023
Revenue from external customers		$ 5,875,700	$ 8,117,422	$ 18,329,363	$ 23,428,681
Gross profit		1,700,125	2,300,624	5,080,402	6,671,095
Operating Expense		1,546,431	1,832,401	5,138,020	5,226,424
Income (loss) from operations		153,694	468,223	(57,618)	1,444,671
Total Assets		23,471,364		23,471,364		$ 24,402,114
Capital expenditures				614,367	569,445
Depreciation & Amortization				663,828	599,181
Operating Segments [Member]
Revenue from external customers	[1]	5,876,000	8,117,000	18,329,000	23,429,000
Gross profit	[1]	1,700,000	2,301,000	5,080,000	6,671,000
Operating Expense	[1]	1,546,000	1,833,000	5,138,000	5,226,000
Income (loss) from operations	[1]	154,000	468,000	(58,000)	1,445,000
Income (loss) before tax	[1]	0	305,000	(543,000)	1,166,000
Total Assets	[1]	22,447,000	23,988,000	22,447,000	23,988,000
Capital expenditures	[1]	102,000	1,000	614,000	569,000
Depreciation & Amortization	[1]	229,000	191,000	664,000	599,000
Operating Segments [Member] | Agricultural Products [Member]
Revenue from external customers		2,988,000	5,530,000	11,779,000	17,343,000
Gross profit		814,000	1,437,000	3,278,000	5,100,000
Operating Expense		1,287,000	1,545,000	4,336,000	4,390,000
Income (loss) from operations		(472,000)	(108,000)	(1,057,000)	710,000
Income (loss) before tax		(618,000)	(264,000)	(1,516,000)	340,000
Total Assets		19,311,000	20,515,000	19,311,000	20,515,000
Capital expenditures		50,000	0	438,000	447,000
Depreciation & Amortization		163,000	126,000	472,000	376,000
Operating Segments [Member] | Modular Buildings [Member]
Revenue from external customers		2,888,000	2,587,000	6,550,000	6,086,000
Gross profit		886,000	864,000	1,802,000	1,571,000
Operating Expense		259,000	288,000	802,000	836,000
Income (loss) from operations		626,000	576,000	999,000	735,000
Income (loss) before tax		618,000	569,000	973,000	826,000
Total Assets		3,136,000	3,473,000	3,136,000	3,473,000
Capital expenditures		52,000	1,000	176,000	122,000
Depreciation & Amortization		$ 66,000	$ 65,000	$ 192,000	$ 223,000

[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.