Investments and Fair Value Measurements (Fair Value Inputs) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Feb. 27, 2016	Aug. 29, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 28,146	$ 63,107
Domestic equity funds	3,921	4,937
International equity funds	254	493
Fixed income funds	274	284
Total assets at fair value	32,595	68,821
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	28,146	63,107
Domestic equity funds	3,853	4,894
International equity funds	227	477
Fixed income funds	229	251
Total assets at fair value	32,455	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	68	43
International equity funds	27	16
Fixed income funds	45	33
Total assets at fair value	140	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