Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	Nov. 19, 2011	Aug. 27, 2011
Company's assets and liabilities measured at fair value on a recurring basis
Other current assets	$ 13,046	$ 11,872
Other long-term assets	61,509	61,259
Total	74,555	73,131
Level 1 [Member]
Company's assets and liabilities measured at fair value on a recurring basis
Other current assets	13,046	11,872
Other long-term assets	55,674	55,390
Total	68,720	67,262
Level 2 [Member]
Company's assets and liabilities measured at fair value on a recurring basis
Other current assets	0	0
Other long-term assets	5,835	5,869
Total	5,835	5,869
Level 3 [Member]
Company's assets and liabilities measured at fair value on a recurring basis
Other current assets	0	0
Other long-term assets	0	0
Total	$ 0	$ 0