Note 17 - Earnings Per Share (Details) - Components of Basic and Diluted Net Income Per Share - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended												4 Months Ended				12 Months Ended
		May. 06, 2015	[1]	Feb. 11, 2015	[1]	Nov. 19, 2014	[1]	May. 07, 2014	[1]	Feb. 12, 2014	[1]	Nov. 20, 2013	[1]	Aug. 26, 2015	[1]	Aug. 27, 2014	[1]	Aug. 26, 2015		Aug. 27, 2014		Aug. 28, 2013
Numerator:
Income (loss) from continuing operations (in Dollars)		$ 2,532		$ (1,229)		$ (2,816)		$ 1,742		$ (1,581)		$ (693)		$ 141		$ (1,081)		$ (1,372)		$ (1,613)		$ 4,547
Net income (loss) (in Dollars)		$ 2,353		$ (1,359)		$ (3,019)		$ 1,730		$ (2,184)		$ (1,546)		$ (49)		$ (1,447)		$ (2,074)		$ (3,447)		$ 3,161
Denominator:
Denominator for basic earnings per share—weighted-average shares (in Shares)																		28,974		28,812		28,618
Effect of potentially dilutive securities:
Employee and non-employee stock options (in Shares)																		0		0		248
Denominator for earnings per share assuming dilution (in Shares)																		28,974		28,812		28,866
Income (loss) from continuing operations:
Basic																		$ (0.05)		$ (0.06)		$ 0.16
Assuming dilution (a)	[2]																	(0.05)		(0.06)		0.16
Net income (loss) per share:
Basic		$ 0.08		$ (0.05)		$ (0.11)		$ 0.06		$ (0.08)		$ (0.05)				$ (0.05)		(0.07)		(0.12)		0.11
Assuming dilution (a)		$ 0.08		$ (0.05)		$ (0.11)		$ 0.06		$ (0.08)		$ (0.05)				$ (0.05)		$ (0.07)	[2]	$ (0.12)	[2]	$ 0.11	[2]

[1] The quarters ended August 26, 2015 and August 27, 2014 consists of four four-week periods. All other quarters presented represent three four-week periods.

[2] Potentially dilutive shares not included in the computation of net income per share because to do so would have been antidilutive amounted to 77,000 in fiscal year 2015, 180,000 in fiscal year 2014 and zero shares in fiscal year 2013. Additionally, stock options with exercise prices exceeding market close prices that were excluded from the computation of net income per share amounted to 415,000 shares in fiscal year 2015, 143,000 shares in fiscal year 2014 and 67,000 shares in fiscal year 2013.