Note 10 - Anticipated Payments and Insurance Proceeds of Identified Environmental Remediation Liabilities (Details) - USD ($) $ in Thousands	May 28, 2016	Aug. 29, 2015
Estimated costs – current dollars, year one	$ 6,593
Estimated costs – current dollars, year two	1,829
Estimated costs – current dollars, year three	1,476
Estimated costs – current dollars, year four	1,309
Estimated costs – current dollars, year five	1,361
Estimated costs – current dollars, thereafter	12,493
Estimated costs – current dollars, total	25,061
Estimated insurance proceeds, year one	(91)
Estimated insurance proceeds, year two	(173)
Estimated insurance proceeds, year three	(159)
Estimated insurance proceeds, year four	(173)
Estimated insurance proceeds, year five	(159)
Estimated insurance proceeds, thereafter	(1,293)
Estimated insurance proceeds, total	(2,048)
Net anticipated costs, , year one	6,502
Net anticipated costs, year two	1,656
Net anticipated costs, year three	1,317
Net anticipated costs, year four	1,136
Net anticipated costs, year five	1,202
Net anticipated costs, thereafter	11,200
Net anticipated costs, total	23,013
Effect of inflation	7,757
Effect of discounting	(7,134)
Balance as of May 28, 2016	$ 23,636	$ 23,307