Investments and Fair Value Measurements (Fair Value Inputs) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	May 28, 2016	Aug. 29, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 53,168	$ 63,107
Domestic equity funds	3,857	4,937
International equity funds	284	493
Fixed income funds	255	284
Total assets at fair value	57,564	68,821
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	53,168	63,107
Domestic equity funds	3,788	4,894
International equity funds	231	477
Fixed income funds	223	251
Total assets at fair value	57,410	68,729
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Domestic equity funds	69	43
International equity funds	53	16
Fixed income funds	32	33
Total assets at fair value	154	92
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	0
Domestic equity funds	0	0
International equity funds	0	0
Fixed income funds	0	0
Total assets at fair value	$ 0	$ 0