Note 3 - Net Income (Loss) Per Share of Common Stock - Basic and Diluted Earnings Per Common Share (Details) (USD $)	3 Months Ended
Feb. 28, 2015	Feb. 28, 2014
Basic:
Numerator: net income	$ 168,195us-gaap_NetIncomeLoss	$ (258,312)us-gaap_NetIncomeLoss
Average number of common shares outstanding (in shares)	4,050,507	4,046,552
Basic earnings per common share (in dollars per share)	$ 0.04us-gaap_EarningsPerShareBasic	$ (0.06)us-gaap_EarningsPerShareBasic
Diluted:
Numerator: net income	$ 168,195us-gaap_NetIncomeLoss	$ (258,312)us-gaap_NetIncomeLoss
Average number of common shares outstanding (in shares)	4,050,507	4,046,552
Effect of dilutive stock options (in shares)	1,247	0
Denominator: dilutive average number of common shares outstanding (in shares)	4,051,754	4,046,552
Diluted earnings per common share (in dollars per share)	$ 0.04us-gaap_EarningsPerShareDiluted	$ (0.06)us-gaap_EarningsPerShareDiluted

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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