Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	Feb. 11, 2012	Aug. 27, 2011
Company's assets and liabilities measured at fair value on a recurring basis
Other current assets	$ 13,624	$ 11,872
Other long-term assets	61,903	61,259
Total	75,527	73,131
Level 1 [Member]
Company's assets and liabilities measured at fair value on a recurring basis
Other current assets	13,624	11,872
Other long-term assets	55,734	55,390
Total	69,358	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	6,169	5,869
Total	6,169	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