Note 17 - Segment Information - Segment Reporting Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2023	May 31, 2022	Nov. 30, 2022
Revenue from external customers	$ 9,007,874	$ 7,275,353	$ 16,902,659	$ 12,888,420
Income (loss) from operations	418,610	321,093	967,196	(115,784)
Total Assets	25,470,337		25,470,337		$ 23,948,314
Capital expenditures			639,833	509,097
Depreciation & Amortization			488,806	350,435
Operating Segments [Member]
Revenue from external customers	9,008,000	7,275,000	16,903,000	12,888,000
Income (loss) from operations	419,000	321,000	967,000	(116,000)
Income (loss) before tax	388,000	222,000	822,000	(293,000)
Total Assets	25,470,000	23,907,000	25,470,000	23,907,000
Capital expenditures	327,000	335,000	640,000	509,000
Depreciation & Amortization	250,000	182,000	489,000	350,000
Operating Segments [Member] | Agricultural Products [Member]
Revenue from external customers	6,368,000	5,316,000	11,813,000	9,477,000
Income (loss) from operations	316,000	447,000	818,000	318,000
Income (loss) before tax	197,000	366,000	604,000	180,000
Total Assets	19,776,000	18,389,000	19,776,000	18,389,000
Capital expenditures	249,000	321,000	501,000	474,000
Depreciation & Amortization	125,000	117,000	250,000	218,000
Operating Segments [Member] | Modular Buildings [Member]
Revenue from external customers	1,856,000	1,209,000	3,498,000	2,077,000
Income (loss) from operations	117,000	(86,000)	159,000	(308,000)
Income (loss) before tax	220,000	(93,000)	257,000	(323,000)
Total Assets	3,399,000	2,998,000	3,399,000	2,998,000
Capital expenditures	78,000	10,000	123,000	24,000
Depreciation & Amortization	81,000	33,000	158,000	67,000
Operating Segments [Member] | Tools [Member]
Revenue from external customers	784,000	750,000	1,592,000	1,334,000
Income (loss) from operations	(14,000)	(40,000)	(9,000)	(126,000)
Income (loss) before tax	(29,000)	(51,000)	(39,000)	(150,000)
Total Assets	2,295,000	2,520,000	2,295,000	2,520,000
Capital expenditures	0	4,000	16,000	11,000
Depreciation & Amortization	$ 44,000	$ 32,000	$ 81,000	$ 65,000