Note 10 - Commitments and Contingencies (Tables)

6 Months Ended

Feb. 28, 2015

Commitments and Contingencies Disclosure [Abstract]

Schedule Of Environmental Liabilities [Table Text Block]

	February 28, 2015
Beginning balance as of August 30, 2014	$	19,846
Payments made for which reserves had been provided		(1,683	)
Insurance proceeds received		65
Interest accretion		302
Revision in estimates		3,025
Change in discount rates		946
Balance as of February 28, 2015	$	22,501

Schedule Of Environmental Remediation Liabilities [Table Text Block]

(In thousands)	2015			2016			2017			2018			2019			Thereafter			Total
Estimated costs – current dollars	$	3,536		$	4,940		$	1,663		$	745		$	863		$	12,406		$	24,153
Estimated insurance proceeds		(107	)		(159	)		(173	)		(159	)		(173	)		(1,430	)		(2,201	)
Net anticipated costs	$	3,429		$	4,781		$	1,490		$	586		$	690		$	10,976		$	21,952
Effect of inflation																				7,377
Effect of discounting																				(6,828	)
Balance as of February 28, 2015																			$	22,501