Note 4 - Basic and Diluted Earnings Per Common Share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Aug. 31, 2016	Aug. 31, 2015	Aug. 31, 2016	Aug. 31, 2015
Numerator for basic and diluted (loss) earnings per common share:
Net (loss) income from continuing operations	$ (149,676)	$ (716,408)	$ 807	$ (261,968)
Net (loss) income from discontinued operations	(138,603)	(79,185)	(264,685)	(133,802)
Net (loss) income	$ (288,279)	$ (795,593)	$ (263,878)	$ (395,770)
Denominator:
For basic (loss) earnings per share - weighted average common shares outstanding (in shares)	4,105,704	4,061,052	4,093,993	4,057,496
Effect of dilutive stock options (in shares)
For diluted (loss) earnings per share - weighted average common shares outstanding (in shares)	4,105,704	4,061,052	4,093,993	4,057,496
Earnings (Loss) per share - Basic:
Continuing Operations (in dollars per share)	$ (0.04)	$ (0.18)	$ 0	$ (0.06)
Discontinued Operations (in dollars per share)	(0.03)	(0.02)	(0.06)	(0.03)
Net Income (Loss) per share (in dollars per share)	(0.07)	(0.20)	(0.06)	(0.10)
Earnings (Loss) per share - Diluted:
Continuing Operations (in dollars per share)	(0.04)	(0.18)	0	(0.06)
Discontinued Operations (in dollars per share)	(0.03)	(0.02)	(0.06)	(0.03)
Net Income (Loss) per share (in dollars per share)	$ (0.07)	$ (0.20)	$ (0.06)	$ (0.10)