Note 18 - Segment Information - Segment Reporting Information (Details) - USD ($)		3 Months Ended		6 Months Ended
		May 31, 2024	May 31, 2023	May 31, 2024	May 31, 2023	Nov. 30, 2023
Revenue from external customers		$ 6,730,268	$ 8,224,395	$ 12,453,663	$ 15,311,259
Gross profit		1,906,752	2,183,596	3,380,277	4,370,471
Operating Expense		1,737,984	1,750,594	3,591,590	3,394,023
Income (loss) from operations		168,768	433,002	(211,313)	976,448
Total Assets		23,171,111		23,171,111		$ 24,402,114
Capital expenditures				512,547	623,778
Depreciation & Amortization				434,300	408,066
Operating Segments [Member]
Revenue from external customers	[1]	6,730,000	8,224,000	12,454,000	15,311,000
Gross profit	[1]	1,907,000	2,184,000	3,380,000	4,370,000
Operating Expense	[1]	1,738,000	1,751,000	3,592,000	3,394,000
Income (loss) from operations	[1]	169,000	433,000	(211,000)	977,000
Income (loss) before tax	[1]	(5,000)	417,000	(542,000)	861,000
Total Assets	[1]	22,139,000	23,175,000	22,139,000	23,175,000
Capital expenditures	[1]	232,000	327,000	513,000	624,000
Depreciation & Amortization	[1]	232,000	206,000	434,000	408,000
Operating Segments [Member] | Agricultural Products [Member]
Revenue from external customers		4,555,000	6,368,000	8,792,000	11,813,000
Gross profit		1,323,000	1,799,000	2,464,000	3,662,000
Operating Expense		1,481,000	1,483,000	3,049,000	2,845,000
Income (loss) from operations		(158,000)	316,000	(584,000)	818,000
Income (loss) before tax		(323,000)	197,000	(897,000)	604,000
Total Assets		19,528,000	19,776,000	19,528,000	19,776,000
Capital expenditures		205,000	249,000	389,000	501,000
Depreciation & Amortization		161,000	125,000	308,000	250,000
Operating Segments [Member] | Modular Buildings [Member]
Revenue from external customers		2,175,000	1,856,000	3,662,000	3,498,000
Gross profit		584,000	385,000	916,000	708,000
Operating Expense		257,000	268,000	543,000	549,000
Income (loss) from operations		327,000	117,000	373,000	159,000
Income (loss) before tax		318,000	220,000	355,000	257,000
Total Assets		2,611,000	3,399,000	2,611,000	3,399,000
Capital expenditures		27,000	78,000	124,000	123,000
Depreciation & Amortization		$ 71,000	$ 81,000	$ 126,000	$ 158,000

[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.