Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended
Nov. 27, 2021	Nov. 28, 2020
Segment Reporting Information [Line Items]
Revenues	$ 486,164	$ 446,853
Operating income (loss)	44,790	56,042
Interest (income) expense, net	(648)	(568)
Income (loss) before taxes	44,702	55,861
U.S. and Canadian Rental and Cleaning \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	420,053	386,158
Operating income (loss)	73,925	74,840
Interest (income) expense, net	(666)	(693)
Income (loss) before taxes	74,570	75,542
MFG \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	90,725	59,082
Operating income (loss)	24,025	19,810
Income (loss) before taxes	23,966	19,674
MFG \| Net Interco MFG Elim
Segment Reporting Information [Line Items]
Revenues	(90,725)	(59,082)
Operating income (loss)	(7,599)	(994)
Income (loss) before taxes	(7,599)	(994)
Corporate \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	8,793	7,032
Operating income (loss)	(53,844)	(44,786)
Interest (income) expense, net	18	125
Income (loss) before taxes	(53,990)	(45,383)
Subtotal Core Laundry Operations
Segment Reporting Information [Line Items]
Revenues	428,846	393,190
Operating income (loss)	36,507	48,870
Interest (income) expense, net	(648)	(568)
Income (loss) before taxes	36,947	48,839
Specialty Garments
Segment Reporting Information [Line Items]
Revenues	39,484	38,134
Specialty Garments \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	39,484	38,134
Operating income (loss)	8,629	7,159
Income (loss) before taxes	8,105	7,008
First Aid
Segment Reporting Information [Line Items]
Revenues	17,834	15,529
First Aid \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	17,834	15,529
Operating income (loss)	(346)	13
Income (loss) before taxes	$ (350)	$ 14

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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