Note 10 - Anticipated Payments and Insurance Proceeds of Identified Environmental Remediation Liabilities (Details) $ in Thousands	Feb. 27, 2016 USD ($)
Estimated costs – current dollars	$ 6,908
Estimated costs – current dollars	1,829
Estimated costs – current dollars	1,476
Estimated costs – current dollars	1,309
Estimated costs – current dollars	1,361
Estimated costs – current dollars	12,494
Estimated costs – current dollars	25,377
Estimated insurance proceeds	(128)
Estimated insurance proceeds	(173)
Estimated insurance proceeds	(159)
Estimated insurance proceeds	(173)
Estimated insurance proceeds	(159)
Estimated insurance proceeds	(1,293)
Estimated insurance proceeds	(2,085)
Net anticipated costs	6,780
Net anticipated costs	1,656
Net anticipated costs	1,317
Net anticipated costs	1,136
Net anticipated costs	1,202
Net anticipated costs	11,201
Net anticipated costs	23,292
Effect of inflation	7,589
Effect of discounting	(7,084)
Balance as of February 27, 2016	$ 23,797