Investments and Fair Value Measurements (Fair Value Inputs) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Nov. 26, 2016	Aug. 27, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 0	$ 77,234
Domestic equity funds	3,482	3,587
International equity funds	243	258
Fixed income funds	272	265
Total assets at fair value	3,997	81,344
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	77,234
Domestic equity funds	3,395	3,515
International equity funds	203	225
Fixed income funds	201	206
Total assets at fair value	3,799	81,180
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	87	72
International equity funds	40	33
Fixed income funds	71	59
Total assets at fair value	198	164
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