Note 6 - Net Income Per Share (Tables)

3 Months Ended

Nov. 29, 2014

Earnings Per Share [Abstract]

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

	Thirteen weeks ended
	November 29,		November 30,
	2014		2013
Net income available to shareholders	$	37,413	$	34,462
Allocation of net income for Basic:
Common Stock	$	29,649	$	27,208
Class B Common Stock		7,434		6,798
Unvested participating shares		330		456
	$	37,413	$	34,462
Weighted average number of shares for Basic:
Common Stock		15,128		15,029
Class B Common Stock		4,741		4,693
Unvested participating shares		192		288
		20,061		20,010
Earnings per share for Basic:
Common Stock	$	1.96	$	1.81
Class B Common Stock	$	1.57	$	1.45

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

	Thirteen weeks ended November 29, 2014							Thirteen weeks ended November 30, 2013
	Earnings							Earnings
	to Common			Common				to Common			Common
	shareholders			Shares		EPS		shareholders			Shares		EPS
As reported - Basic	$	29,649			15,128	$	1.96	$	27,208			15,029	$	1.81
Add: effect of dilutive potential common shares
Share-Based Awards		—			139				—			169
Class B Common Stock		7,434			4,741				6,798			4,693
Add: Undistributed earnings allocated to unvested participating shares		323			—				447			—
Less: Undistributed earnings reallocated to unvested participating shares		(305	)		—				(422	)		—
Diluted EPS – Common Stock	$	37,101			20,008	$	1.85	$	34,031			19,891	$	1.71