Goodwill and Other Intangible Assets - Schedule of Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 26, 2017	Aug. 27, 2016
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 55,302	$ 7,481
Weighted average life	13 years 10 months 24 days
Total intangible assets and goodwill acquired	$ 101,450	14,239
Customer contracts
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 43,369	$ 6,088
Weighted average life	14 years 6 months	14 years 9 months 18 days
Other intangible assets
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 2,779	$ 670
Weighted average life	4 years 8 months 12 days	5 years 3 months 18 days