Fair Value Measurements (Fair Value Inputs) (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	Aug. 25, 2012	Aug. 27, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Student loan ARS	$ 9,074	$ 10,627
Domestic equity funds	7,924	9,362
International equity funds	957	1,441
Fixed income funds	487	649
Total assets at fair value	18,442	22,079
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Student loan ARS		0
Domestic equity funds	7,924	9,362
International equity funds	957	1,441
Fixed income funds	487	649
Total assets at fair value	9,368	11,452
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Student loan ARS		0
Domestic equity funds	0	0
International equity funds	0	0
Fixed income funds	0	0
Total assets at fair value	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Student loan ARS	9,074	10,627
Domestic equity funds	0	0
International equity funds	0	0
Fixed income funds	0	0
Total assets at fair value	$ 9,074	$ 10,627