Note 3 - Net Income Per Share of Common Stock (Details) - Earnings Per Share, Basic And Diluted (USD $)	3 Months Ended		6 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2013	May 31, 2012
Basic:
Numerator: net income (in Dollars)	$ 514,240	$ 935,981	$ 1,333,500	$ 1,129,479
Average number of common shares outstanding	4,037,552	4,031,439	4,036,302	4,029,825
Effect of dilutive stock options	14,140	16,348	13,178	17,521
Denominator: dilutive average number of common shares outstanding	4,051,692	4,047,787	4,049,480	4,047,346
Diluted earnings per common share (in Dollars per share)	$ 0.13	$ 0.23	$ 0.33	$ 0.28
Basic earnings per common share (in Dollars per share)	$ 0.13	$ 0.23	$ 0.33	$ 0.28