Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 24, 2018	Feb. 25, 2017	Feb. 24, 2018	Feb. 25, 2017
Segment Reporting Information [Line Items]
Revenues	$ 419,264	$ 391,427	$ 835,042	$ 777,535
Operating income (loss)	41,952	36,146	93,863	81,903
Interest (income) expense, net	(1,430)	(1,120)	(2,706)	(1,921)
Income (loss) before taxes	43,568	37,374	96,601	83,438
U.S. and Canadian Rental and Cleaning | Operating Segments
Segment Reporting Information [Line Items]
Revenues	368,386	350,059	733,904	694,540
Operating income (loss)	48,516	42,731	103,314	95,558
Interest (income) expense, net	(1,094)	(925)	(2,043)	(1,759)
Income (loss) before taxes	49,602	43,691	105,366	97,399
MFG | Operating Segments
Segment Reporting Information [Line Items]
Revenues	59,769	46,224	123,714	95,086
Operating income (loss)	21,994	16,652	45,981	34,859
Interest (income) expense, net	0	0	0	0
Income (loss) before taxes	21,974	16,630	45,884	34,852
MFG | Net Interco MFG Elim
Segment Reporting Information [Line Items]
Revenues	(59,738)	(46,118)	(123,657)	(94,922)
Operating income (loss)	(2,797)	1,007	(7,534)	68
Interest (income) expense, net	0	0	0	0
Income (loss) before taxes	(2,797)	1,007	(7,534)	68
Corporate | Operating Segments
Segment Reporting Information [Line Items]
Revenues	10,538	8,221	18,790	15,525
Operating income (loss)	(29,629)	(27,331)	(57,319)	(53,753)
Interest (income) expense, net	(336)	(195)	(663)	(162)
Income (loss) before taxes	(29,280)	(27,093)	(56,613)	(53,673)
Subtotal Core Laundry Operations
Segment Reporting Information [Line Items]
Revenues	378,955	358,386	752,751	710,229
Operating income (loss)	38,084	33,059	84,442	76,732
Interest (income) expense, net	(1,430)	(1,120)	(2,706)	(1,921)
Income (loss) before taxes	39,499	34,235	87,103	78,646
Specialty Garments | Operating Segments
Segment Reporting Information [Line Items]
Revenues	27,009	21,787	55,436	44,143
Operating income (loss)	2,800	2,095	7,277	3,246
Interest (income) expense, net	0	0	0	0
Income (loss) before taxes	3,001	2,147	7,354	2,867
First Aid | Operating Segments
Segment Reporting Information [Line Items]
Revenues	13,300	11,254	26,855	23,163
Operating income (loss)	1,068	992	2,144	1,925
Interest (income) expense, net	0	0	0	0
Income (loss) before taxes	$ 1,068	$ 992	$ 2,144	$ 1,925