Note 3 - Net Income (Loss) Per Share of Common Stock (Details) - Computation of Basic and Diluted Earnings (Loss) Per Common Share (USD $)	3 Months Ended		9 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Basic:
Numerator: net income (loss) (in Dollars)	$ 558,208	$ 26,394	$ 553,051	$ 1,359,894
Average number of common shares outstanding	4,048,552	4,041,682	4,047,544	4,038,118
Effect of dilutive stock options	4,577	16,091	5,608	12,701
Denominator: dilutive average number of common shares outstanding	4,053,129	4,057,773	4,053,152	4,050,819
Diluted earnings per common share (in Dollars per share)	$ 0.14	$ 0.01	$ 0.14	$ 0.34
Basic earnings per common share (in Dollars per share)	$ 0.14	$ 0.01	$ 0.14	$ 0.34