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Schedule II - Valuation and Qualifying Accounts and Reserves (Details) - Reserves for Accounts Receivable - USD ($)
$ in Thousands
12 Months Ended
Aug. 26, 2017
Aug. 27, 2016
Aug. 29, 2015
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance, Beginning of Period $ 7,675 $ 6,007 $ 5,114
Charged to Costs and Expenses 5,629 6,375 5,098
Charges for Which Reserves Were Created or Deductions (4,585) (4,707) (4,205)
Balance, End of Period $ 8,719 $ 7,675 $ 6,007