Consolidated Statements of Operations - USD ($)	12 Months Ended
	Nov. 30, 2018	Nov. 30, 2017
Sales	$ 19,726,793	$ 20,715,080
Cost of goods sold	16,215,237	16,632,979
Gross profit	3,511,556	4,082,101
Expenses:
Engineering	640,430	501,182
Selling	1,936,147	1,889,461
General and administrative	3,438,981	3,343,500
Impairment of Assets	591,268	70,000
Total expenses	6,606,826	5,804,143
(Loss) from operations	(3,095,270)	(1,722,042)
Other income (expense):
Interest expense	(304,566)	(319,622)
Other	(446,629)	248,507
Total other income (expense)	(751,195)	(71,115)
Income	(3,846,465)	(1,793,157)
Income tax (benefit)	(510,416)	(423,798)
(Loss) from continuing operations	(3,336,049)	(1,369,359)
Discontinued Operations
Loss from operations of discontinued segment	(67,177)	(400,739)
Income tax benefit	(16,324)	(133,017)
Loss on discontinued operations	(50,853)	(267,722)
Net (Loss)	$ (3,386,902)	$ (1,637,081)
(Loss) per share - basic:
Continuing Operations (in dollars per share)	$ (0.80)	$ (0.33)
Discontinued Operations (in dollars per share)	(0.01)	(0.06)
Net Income (Loss) per share (in dollars per share)	(0.81)	(0.39)
(Loss) per share - diluted:
Continuing Operations (in dollars per share)	(0.80)	(0.33)
Discontinued Operations (in dollars per share)	(0.01)	(0.06)
Net Income (Loss) per share (in dollars per share)	$ (0.81)	$ (0.39)
Weighted average outstanding shares used to compute basic net loss per share (in shares)	4,202,836	4,151,406
Weighted average outstanding shares used to compute diluted net loss per share (in shares)	4,202,836	4,151,406