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Derivatives, Investments and Fair Value Measurements (Fair Value Inputs) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($)
$ in Thousands
May 27, 2017
Aug. 27, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents $ 0 $ 77,234
Domestic equity funds 2,178 3,587
International equity funds 208 258
Fixed income funds 220 265
Interest rate swap contract (802) 0
Total assets (liabilities) at fair value 1,804 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 2,085 3,515
International equity funds 165 225
Fixed income funds 138 206
Interest rate swap contract 0 0
Total assets (liabilities) at fair value 2,388 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 93 72
International equity funds 43 33
Fixed income funds 82 59
Interest rate swap contract (802) 0
Total assets (liabilities) at fair value (584) 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
Interest rate swap contract 0 0
Total assets (liabilities) at fair value $ 0 $ 0