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Revenue Recognition - Schedule of Total Revenue Disaggregated by Service Type (Details) - USD ($) $ in Thousands	3 Months Ended
	Nov. 30, 2019	Nov. 24, 2018
Disaggregation of Revenue [Line Items]
Total revenues	$ 465,398	$ 438,550
Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	100.00%	100.00%
Core Laundry Operations
Disaggregation of Revenue [Line Items]
Total revenues	$ 416,298	$ 390,477
Core Laundry Operations | Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	89.40%	89.00%
Specialty Garments
Disaggregation of Revenue [Line Items]
Total revenues	$ 33,402	$ 34,448
Specialty Garments | Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	7.20%	7.90%
First Aid
Disaggregation of Revenue [Line Items]
Total revenues	$ 15,698	$ 13,625
First Aid | Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	3.40%	3.10%

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