Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended
Nov. 24, 2018	Nov. 25, 2017
Segment Reporting Information [Line Items]
Revenues	$ 438,550	$ 415,778
Operating income (loss)	50,426	51,911
Interest income, net	(1,705)	(1,276)
Income (loss) before taxes	51,959	53,033
U.S. and Canadian Rental and Cleaning \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	380,753	365,518
Operating income (loss)	54,714	54,798
Interest income, net	(1,047)	(949)
Income (loss) before taxes	55,752	55,764
MFG \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	67,546	63,945
Operating income (loss)	24,732	23,987
Interest income, net	0	0
Income (loss) before taxes	24,840	23,910
MFG \| Net Interco MFG Elim
Segment Reporting Information [Line Items]
Revenues	(67,511)	(63,919)
Operating income (loss)	(3,747)	(4,737)
Interest income, net	0	0
Income (loss) before taxes	(3,747)	(4,737)
Corporate \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	9,689	8,252
Operating income (loss)	(30,917)	(27,690)
Interest income, net	(658)	(327)
Income (loss) before taxes	(30,233)	(27,333)
Subtotal Core Laundry Operations
Segment Reporting Information [Line Items]
Revenues	390,477	373,796
Operating income (loss)	44,782	46,358
Interest income, net	(1,705)	(1,276)
Income (loss) before taxes	46,612	47,604
Specialty Garments
Segment Reporting Information [Line Items]
Revenues	34,448	28,427
Specialty Garments \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	34,448	28,427
Operating income (loss)	4,470	4,477
Interest income, net	0	0
Income (loss) before taxes	4,173	4,353
First Aid
Segment Reporting Information [Line Items]
Revenues	13,625	13,555
First Aid \| Operating Segments
Segment Reporting Information [Line Items]
Revenues	13,625	13,555
Operating income (loss)	1,174	1,076
Interest income, net	0	0
Income (loss) before taxes	$ 1,174	$ 1,076

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 32
-Paragraph 2A
-URI http://asc.fasb.org/extlink&oid=82859839&loc=SL82860478-203043

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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