Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 26, 2018	May 27, 2017	May 26, 2018	May 27, 2017
Segment Reporting Information [Line Items]
Revenues	$ 427,384	$ 409,834	$ 1,262,426	$ 1,187,369
Operating income (loss)	47,087	38,771	140,950	120,674
Interest (income) expense, net	(1,189)	(809)	(3,895)	(2,730)
Income (loss) before taxes	47,792	39,362	144,393	122,800
U.S. and Canadian Rental and Cleaning | Operating Segments
Segment Reporting Information [Line Items]
Revenues	369,814	361,157	1,103,718	1,055,697
Operating income (loss)	51,981	50,603	155,295	146,161
Interest (income) expense, net	(945)	(809)	(2,988)	(2,568)
Income (loss) before taxes	52,929	51,447	158,295	148,846
MFG | Operating Segments
Segment Reporting Information [Line Items]
Revenues	61,331	53,768	185,045	148,854
Operating income (loss)	21,911	19,932	67,892	54,791
Interest (income) expense, net	0	0	0	0
Income (loss) before taxes	21,946	19,731	67,830	54,583
MFG | Net Interco MFG Elim
Segment Reporting Information [Line Items]
Revenues	(61,300)	(53,722)	(184,957)	(148,644)
Operating income (loss)	(1,499)	(1,029)	(9,033)	(961)
Interest (income) expense, net	0	0	0	0
Income (loss) before taxes	(1,499)	(1,029)	(9,033)	(961)
Corporate | Operating Segments
Segment Reporting Information [Line Items]
Revenues	9,226	5,890	28,016	21,415
Operating income (loss)	(32,420)	(36,044)	(89,739)	(89,797)
Interest (income) expense, net	(244)	0	(907)	(162)
Income (loss) before taxes	(32,203)	(36,181)	(88,816)	(89,854)
Subtotal Core Laundry Operations
Segment Reporting Information [Line Items]
Revenues	379,071	367,093	1,131,822	1,077,322
Operating income (loss)	39,973	33,462	124,415	110,194
Interest (income) expense, net	(1,189)	(809)	(3,895)	(2,730)
Income (loss) before taxes	41,173	33,968	128,276	112,614
Specialty Garments | Operating Segments
Segment Reporting Information [Line Items]
Revenues	34,060	29,861	89,496	74,004
Operating income (loss)	5,589	4,181	12,866	7,427
Interest (income) expense, net	0	0	0	0
Income (loss) before taxes	5,094	4,266	12,448	7,133
First Aid | Operating Segments
Segment Reporting Information [Line Items]
Revenues	14,253	12,880	41,108	36,043
Operating income (loss)	1,525	1,128	3,669	3,053
Interest (income) expense, net	0	0	0	0
Income (loss) before taxes	$ 1,525	$ 1,128	$ 3,669	$ 3,053