Note 12 - Share-based Compensation (Tables)

12 Months Ended

Aug. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Compensation Expense For All Share-Based Compensation For Five Fiscal Years [Table Text Block]

	Share-Based Awards		Restricted Stock		Total
2014	$	1,360	$	2,725	$	4,085
2015		1,048		1,697		2,745
2016		754		680		1,434
2017		482		—		482
2018		75		—		75
Total	$	3,719	$	5,102	$	8,821

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	Number of Shares			Weighted Average Exercise Price
Outstanding, August 25, 2012		560,270		$	41.74
Granted		127,870			70.08
Exercised		(97,600	)		38.39
Forfeited		(6,000	)		44.80
Outstanding, August 31, 2013		584,540		$	48.47
Exercisable, August 31, 2013		100,340		$	44.78