Note 11 - Commitments and Contingencies (Tables)

12 Months Ended

Aug. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule Of Future Minimum Lease Payments For Rent [Table Text Block]

2014	$	6,613
2015		6,063
2016		5,121
2017		3,684
2018		2,014
Thereafter		2,732
	$	26,227

Schedule Of Environmental Liabilities [TableTextBlock]

Year ended	August 31, 2013			August 25, 2012
Beginning balance	$	20,020		$	18,368
Costs incurred for which reserves have been provided		(1,862	)		(1,277	)
Insurance proceeds received		282			209
Interest accretion		542			631
Changes in discount rates		(1,585	)		1,346
Revisions in estimates		2,283			743
Ending balance	$	19,680		$	20,020

Schedule Of Environmental Remediation Liabilities [Table Text Block]

(In thousands)	2014			2015			2016			2017			2018			Thereafter			Total
Estimated costs – current dollars	$	5,317		$	2,620		$	1,887		$	865		$	797		$	12,421		$	23,907
Estimated insurance proceeds		(159	)		(173	)		(159	)		(173	)		(159	)		(1,593	)		(2,416	)
Net anticipated costs	$	5,158		$	2,447		$	1,728		$	692		$	638		$	10,828		$	21,491
Effect of inflation																				7,055
Effect of discounting																				(8,866	)
Balance as of August 31, 2013																			$	19,680