Note 6 - Earnings Per Share - Basic and Diluted Earnings Per Share (Details) (USD $)	3 Months Ended	6 Months Ended
Mar. 01, 2015	Feb. 23, 2014	Mar. 01, 2015	Feb. 23, 2014
Numerator for basic and diluted earnings per share:
Net income	$ 455,602us-gaap_NetIncomeLoss	$ 258,243us-gaap_NetIncomeLoss	$ 622,239us-gaap_NetIncomeLoss	$ 602,774us-gaap_NetIncomeLoss
Denominator for basic earnings per share – weighted average shares (in shares)	2,909,183	2,898,325	2,906,757	2,895,295
Effect of dilutive securities:
Employee and non-employee options	$ 49,002us-gaap_DilutiveSecurities	$ 55,005us-gaap_DilutiveSecurities	$ 52,843us-gaap_DilutiveSecurities	$ 56,276us-gaap_DilutiveSecurities
Dilutive common shares
Denominator for diluted earnings per share (in shares)	2,958,185	2,953,330	2,959,600	2,951,571
Basic earnings per share (in dollars per share)	$ 0.16us-gaap_EarningsPerShareBasic	$ 0.09us-gaap_EarningsPerShareBasic	$ 0.21us-gaap_EarningsPerShareBasic	$ 0.21us-gaap_EarningsPerShareBasic
Diluted earnings per share (in dollars per share)	$ 0.15us-gaap_EarningsPerShareDiluted	$ 0.09us-gaap_EarningsPerShareDiluted	$ 0.21us-gaap_EarningsPerShareDiluted	$ 0.20us-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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- Definition

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

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- Definition

This element represents the weighted average total number of shares issued throughout the period including the first (beginning balance outstanding) and last (ending balance outstanding) day of the period before considering any reductions (for instance, shares held in treasury) to arrive at the weighted average number of shares outstanding. Weighted average relates to the portion of time within a reporting period that common shares have been issued and outstanding to the total time in that period. Such concept is used in determining the weighted average number of shares outstanding for purposes of calculating earnings per share (basic).

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