Note 14 - Share-Based Compensation (Details) - Restricted Stock Unit Activity - Restricted Stock Units (RSUs) [Member] - $ / shares	12 Months Ended
Aug. 26, 2015	Aug. 27, 2014	Aug. 28, 2013	Aug. 29, 2012
Note 14 - Share-Based Compensation (Details) - Restricted Stock Unit Activity [Line Items]
Unvested - Restricted stock	409,417	397,837	424,236	163,946
Unvested - Weighted average fair value	$ 5.98	$ 6.03	$ 5.74	$ 4.83
Unvested - Weighted-average remaining contractual term	1 year 219 days	1 year 219 days	2 years 36 days	1 year 292 days
Granted - Restricted stock	84,495	63,238	274,290
Granted - Weighted average fair value	$ 4.54	$ 7.09	$ 6.17
Vested - Restricted stock	(72,915)	(80,233)	(14,000)
Vested - Weighted average fair value	$ 4.55	$ 5.39	$ 3.46
Forfeited - Restricted stock	0	(9,404)
Forfeited - Weighted average fair value	$ 0	$ 5.79

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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-Publisher FASB

-Name Accounting Standards Codification

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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