Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Aug. 30, 2014

Accounting Policies [Abstract]

Schedule of Inventory, Current [Table Text Block]

	August 30, 2014		August 31, 2013
Raw materials	$	19,053	$	16,673
Work in process		3,759		2,366
Finished goods		56,046		55,312
Total inventories	$	78,858	$	74,351

Property, Plant and Equipment [Table Text Block]

Buildings (in years)	30	-	40
Building components (in years)	10	-	20
Leasehold improvements	Shorter of useful life or term of lease
Machinery and equipment (in years)	3	-	10
Motor vehicles (in years)	3	-	5

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Fiscal year ended August	2014			2013			2012
Risk-free interest rate		1.90	%		1.24	%		1.54	%
Expected dividend yield		0.27	%		0.41	%		0.56	%
Expected life in years		7.45			7.42			7.39
Expected volatility		32.9	%		33.4	%		33.8	%

Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table Text Block]

Year ended	August 30, 2014		August 31, 2013		August 25, 2012
Net income available to shareholders	$	119,925	$	116,685	$	94,989
Allocation of net income for Basic:
Common Stock	$	94,849	$	91,916	$	74,643
Class B Common Stock		23,705		22,913		18,630
Unvested participating shares		1,371		1,856		1,716
	$	119,925	$	116,685	$	94,989
Weighted average number of shares for Basic:
Common Stock		15,080		14,975		14,882
Class B Common Stock		4,711		4,666		4,643
Unvested participating shares		249		345		391
		20,040		19,986		19,916
Earnings per share for Basic:
Common Stock	$	6.29	$	6.14	$	5.02
Class B Common Stock	$	5.03	$	4.91	$	4.01

Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table Text Block]

	Year Ended August 30, 2014							Year Ended August 31, 2013							Year Ended August 25, 2012
	Earnings							Earnings							Earnings
	to Common			Common				to Common			Common				to Common			Common
	shareholders			Shares		EPS		shareholders			Shares		EPS		shareholders			Shares		EPS
As reported – Basic	$	94,849			15,080	$	6.29	$	91,916			14,975	$	6.14	$	74,643			14,882	$	5.02
Add: effect of dilutive potential common shares
Share-Based Awards		—			148				—			148				—			91
Class B Common Stock		23,705			4,711				22,913			4,666				18,630			4,643
Add: Undistributed earnings allocated to unvested participating shares		1,339			—				1,810			—				1,664			—
Less: Undistributed earnings reallocated to unvested participating shares		(1,267	)		—				(1,712	)		—				(1,579	)		—
Diluted EPS – Common Stock	$	118,626			19,939	$	5.95	$	114,927			19,789	$	5.81	$	93,358			19,616	$	4.76