Note 18 - Segment Information - Segment Reporting Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2023	Aug. 31, 2022	Nov. 30, 2022
Revenue from external customers	$ 8,117,422	$ 7,476,215	$ 23,428,681	$ 19,030,526
Gross profit	2,300,624	1,959,657	6,671,095	5,154,288
Income (loss) from operations	468,223	500,268	1,444,671	509,901
Total Assets	25,564,822		25,564,822		$ 23,948,314
Capital expenditures			569,445	1,123,422
Depreciation & Amortization			599,181	443,008
Operating Segments [Member]
Revenue from external customers	8,117,000	7,476,000	23,429,000	19,031,000
Gross profit	2,301,000	1,960,000	6,671,000	5,154,000
Income (loss) from operations	468,000	500,000	1,445,000	510,000
Income (loss) before tax	305,000	385,000	1,166,000	242,000
Total Assets	23,988,000	21,936,000	23,988,000	21,936,000
Capital expenditures	1,000	624,000	569,000	1,123,000
Depreciation & Amortization	191,000	157,000	599,000	443,000
Operating Segments [Member] | Agricultural Products [Member]
Revenue from external customers	5,530,000	6,345,000	17,343,000	15,823,000
Gross profit	1,437,000	1,887,000	5,100,000	4,848,000
Income (loss) from operations	(108,000)	676,000	710,000	994,000
Income (loss) before tax	(264,000)	566,000	340,000	746,000
Total Assets	20,515,000	18,328,000	20,515,000	18,328,000
Capital expenditures	0	506,000	447,000	981,000
Depreciation & Amortization	126,000	124,000	376,000	342,000
Operating Segments [Member] | Modular Buildings [Member]
Revenue from external customers	2,587,000	1,131,000	6,086,000	3,208,000
Gross profit	864,000	73,000	1,571,000	306,000
Income (loss) from operations	576,000	(176,000)	735,000	(484,000)
Income (loss) before tax	569,000	(181,000)	826,000	(504,000)
Total Assets	3,473,000	3,608,000	3,473,000	3,608,000
Capital expenditures	1,000	118,000	122,000	142,000
Depreciation & Amortization	$ 65,000	$ 33,000	$ 223,000	$ 101,000