Goodwill and Other Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	May 27, 2017	Aug. 27, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 243,336	$ 196,787
Accumulated Amortization	167,495	158,123
Net Carrying Amount	75,841	38,664
Customer contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	209,359	165,405
Accumulated Amortization	138,040	129,551
Net Carrying Amount	71,319	35,854
Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	33,977	31,382
Accumulated Amortization	29,455	28,572
Net Carrying Amount	$ 4,522	$ 2,810