Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Aug. 26, 2017	May 27, 2017	Feb. 25, 2017	Nov. 26, 2016	Aug. 27, 2016	May 28, 2016	Feb. 27, 2016	Nov. 28, 2015	Aug. 26, 2017	Aug. 27, 2016	Aug. 29, 2015
Segment Reporting Information [Line Items]
Revenues	$ 403,589	$ 409,834	$ 391,427	$ 386,108	$ 363,766	$ 367,799	$ 363,097	$ 373,384	$ 1,590,958	$ 1,468,046	$ 1,456,605
Income (loss) from operations									110,283	201,160	200,384
Interest income, net									(4,269)	(2,543)	(2,437)
Income (loss) before taxes									115,123	203,371	201,268
Depreciation and amortization									88,879	81,612	77,113
Capital expenditures									108,554	98,235	101,163
Total assets	1,819,128				1,702,007				1,819,128	1,702,007	1,533,237
US and Canadian Rental and Cleaning | Operating Segments
Segment Reporting Information [Line Items]
Revenues									1,415,423	1,308,152	1,305,240
Income (loss) from operations									200,585	201,148	219,430
Interest income, net									(3,371)	(3,252)	(3,189)
Income (loss) before taxes									204,108	204,433	222,657
Depreciation and amortization									59,899	57,062	53,811
Capital expenditures									104,984	91,384	93,842
Total assets	1,667,540				1,567,943				1,667,540	1,567,943	1,401,346
MFG | Operating Segments
Segment Reporting Information [Line Items]
Revenues									206,572	189,154	192,188
Income (loss) from operations									76,115	67,385	66,190
Interest income, net									0	0	0
Income (loss) before taxes									75,738	67,407	66,355
Depreciation and amortization									2,185	2,073	1,536
Capital expenditures									1,079	1,598	2,618
Total assets	34,045				32,556				34,045	32,556	34,075
MFG | Net Interco MFG Elim
Segment Reporting Information [Line Items]
Revenues									(206,316)	(188,904)	(192,188)
Income (loss) from operations									(3,415)	(711)	(733)
Interest income, net									0	0	0
Income (loss) before taxes									(3,415)	(711)	(733)
Depreciation and amortization									0	0	0
Capital expenditures									0	0	0
Total assets	0				0				0	0	0
Corporate | Operating Segments
Segment Reporting Information [Line Items]
Revenues									26,470	20,973	17,088
Income (loss) from operations									(176,978)	(81,748)	(97,301)
Interest income, net									(898)	709	752
Income (loss) before taxes									(175,595)	(82,714)	(98,418)
Depreciation and amortization									20,866	16,918	16,393
Capital expenditures									0	0	0
Total assets	0				0				0	0	0
Subtotal Core Laundry Operations
Segment Reporting Information [Line Items]
Revenues									1,442,149	1,329,375	1,322,328
Income (loss) from operations									96,307	186,074	187,586
Interest income, net									(4,269)	(2,543)	(2,437)
Income (loss) before taxes									100,836	188,415	189,861
Depreciation and amortization									82,950	76,053	71,740
Capital expenditures									106,063	92,982	96,460
Total assets	1,701,585				1,600,499				1,701,585	1,600,499	1,435,421
Specialty Garments | Operating Segments
Segment Reporting Information [Line Items]
Revenues									98,024	91,257	87,513
Income (loss) from operations									9,018	10,204	7,355
Interest income, net										0	0
Income (loss) before taxes									9,329	10,074	5,964
Depreciation and amortization									4,429	4,332	4,331
Capital expenditures									1,737	4,682	3,820
Total assets	87,767				77,728				87,767	77,728	74,449
First Aid | Operating Segments
Segment Reporting Information [Line Items]
Revenues									50,785	47,414	46,764
Income (loss) from operations									4,958	4,882	5,443
Interest income, net									0	0	0
Income (loss) before taxes									4,958	4,882	5,443
Depreciation and amortization									1,500	1,227	1,042
Capital expenditures									754	571	883
Total assets	$ 29,776				$ 23,780				$ 29,776	$ 23,780	$ 23,367