Segment Reporting - Long-lived Assets by Geographic Area (Details) - USD ($) $ in Thousands	Aug. 26, 2017	Aug. 27, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 1,004,902	$ 924,393
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	959,647	880,666
Europe, Canada, Mexico and Nicaragua
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 45,255	$ 43,727