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Investments and Fair Value Measurements (Fair Value Level 3 Rollforward) (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 29, 2015
Aug. 30, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance at beginning of year $ 0 $ 2,108
Net realized loss included in non-operating income 0 0
Net change included in other comprehensive income 0 242
Sales 0 (2,350)
Balance at the end of year $ 0 $ 0