Segment Reporting - Long-lived Assets by Geographic Area (Details) - USD ($) $ in Thousands	Aug. 25, 2018	Aug. 26, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 1,058,586	$ 1,004,902
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	1,012,167	959,647
Europe, Canada, Mexico and Nicaragua
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 46,419	$ 45,255