Revenue Recognition - Schedule of Total Revenue Disaggregated by Service Type (Details) - USD ($) $ in Thousands	3 Months Ended
	Nov. 26, 2022	Nov. 27, 2021
Disaggregation of Revenue [Line Items]
Total revenues	$ 541,798	$ 486,164
Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	100.00%	100.00%
Core Laundry Operations
Disaggregation of Revenue [Line Items]
Total revenues	$ 477,398	$ 428,846
Core Laundry Operations | Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	88.10%	88.20%
Specialty Garments
Disaggregation of Revenue [Line Items]
Total revenues	$ 44,079	$ 39,484
Specialty Garments | Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	8.10%	8.10%
First Aid
Disaggregation of Revenue [Line Items]
Total revenues	$ 20,321	$ 17,834
First Aid | Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	3.80%	3.70%