Note 5 - Stock-based Compensation (Details) - Option Activity (2005 Stock Option Plan [Member], USD $)	12 Months Ended
Aug. 31, 2014	Aug. 25, 2013	Aug. 26, 2012	Aug. 27, 2011
2005 Stock Option Plan [Member]
Note 5 - Stock-based Compensation (Details) - Option Activity [Line Items]
Outstanding at August	259,916	264,500		248,166
Outstanding at August	$ 4.97	$ 4.44		$ 4.16
Granted	70,250	68,750	47,500
Granted	$ 6.23	$ 6.41	$ 5.09
Forfeited		(4,834)	(3,500)
Forfeited		$ 6.02	$ 4.99
Lapsed		(4,000)
Lapsed		$ 5.39
Exercised	(26,915)	(64,500)	(27,666)
Exercised	$ 4.63	$ 4.20	$ 3.02
Outstanding at August	303,251	259,916	264,500	248,166
Outstanding at August	$ 5.30	$ 4.97	$ 4.44	$ 4.16

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(4)

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

+ References

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-Number 210

-Section 04

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