Note 18 - Segment Information - Segment Reporting Information (Details) - USD ($)		12 Months Ended
		Nov. 30, 2018	Nov. 30, 2017
Revenues, Total		$ 19,726,793	$ 20,715,080
(Loss) from operations		(3,095,270)	(1,722,042)
Total assets		21,325,474	24,379,833
Capital expenditures		434,505	513,614
Depreciation & Amortization		960,606	702,349
Operating Segments [Member]
Revenues, Total	[1]	19,727,000	20,715,000
(Loss) from operations		(3,095,000)	(1,722,000)
(Loss) before tax		(3,846,000)	(1,793,000)
Total assets	[1]	21,325,000	22,952,000
Capital expenditures	[1]	764,000	514,000
Depreciation & Amortization	[1]	961,000	702,000
Operating Segments [Member] | Agricultural Products [Member]
Revenues, Total		14,344,000	15,407,000
(Loss) from operations		(2,462,000)	(1,381,000)
(Loss) before tax		(3,206,000)	(1,371,000)
Total assets		15,458,000	17,237,000
Capital expenditures		321,000	303,000
Depreciation & Amortization		516,000	506,000
Operating Segments [Member] | Modular Buildings [Member]
Revenues, Total		3,109,000	2,700,000
(Loss) from operations		(566,000)	(313,000)
(Loss) before tax		(530,000)	(349,000)
Total assets		3,401,000	3,108,000
Capital expenditures		439,000	121,000
Depreciation & Amortization		317,000	69,000
Operating Segments [Member] | Tools [Member]
Revenues, Total		2,274,000	2,608,000
(Loss) from operations		(67,000)	(28,000)
(Loss) before tax		(110,000)	(73,000)
Total assets		2,466,000	2,607,000
Capital expenditures		4,000	90,000
Depreciation & Amortization		$ 128,000	$ 127,000

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