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Acquisitions - Schedule of Acquisition of Business (Details)
$ in Thousands
12 Months Ended
Aug. 31, 2019
USD ($)
Business
Aug. 25, 2018
USD ($)
Business
Aug. 26, 2017
USD ($)
Business
Business Combinations [Abstract]      
Number of businesses acquired | Business 6 9 6
Tangible assets acquired $ 322 $ 7,743 $ 26,174
Intangible assets and goodwill acquired 5,391 34,110 101,530
Liabilities assumed   (95) (2,156)
Acquisition of businesses $ 5,713 $ 41,758 $ 125,548