Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Aug. 27, 2016		Aug. 29, 2015	Aug. 30, 2014
Cash flows from operating activities:
Net income	$ 125,026,000		$ 124,299,000	$ 119,925,000
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	72,983,000		68,164,000	62,791,000
Amortization of intangible assets	8,629,000		8,949,000	8,961,000
Amortization of deferred financing costs	184,000		209,000	209,000
Share-based compensation	5,628,000		5,366,000	5,601,000
Accretion on environmental contingencies	669,000		603,000	716,000
Accretion on asset retirement obligations	826,000		690,000	941,000
Deferred income taxes	9,899,000		(3,473,000)	8,439,000
Changes in assets and liabilities, net of acquisitions:
Receivables, less reserves	(3,949,000)		(3,494,000)	(11,541,000)
Inventories	1,467,000		(2,236,000)	(4,450,000)
Rental merchandise in service	3,945,000		4,900,000	(14,002,000)
Prepaid expenses and other current assets	(38,443,000)		(4,005,000)	2,623,000
Accounts payable	49,000		(7,648,000)	13,646,000
Accrued liabilities	31,954,000		17,832,000	6,890,000
Prepaid and accrued income taxes	(11,231,000)		16,761,000	(6,130,000)
Net cash provided by operating activities	207,636,000		226,917,000	194,619,000
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired	(16,583,000)		(22,359,000)	(3,635,000)
Capital expenditures	(98,235,000)		(101,163,000)	(91,808,000)
Other	149,000		(747,000)	1,269,000
Net cash used in investing activities	(114,669,000)		(124,269,000)	(94,174,000)
Cash flows from financing activities:
Proceeds from loans payable and long-term debt	0		6,866,000	9,388,000
Payments on loans payable and long-term debt	(1,301,000)		(13,055,000)	(113,247,000)
Payment of deferred financing costs	(813,000)
Proceeds from exercise of share-based awards, including excess tax benefits	5,313,000		7,799,000	5,899,000
Taxes withheld and paid related to net share settlement of equity awards	(5,965,000)		(5,002,000)	(3,527,000)
Payment of cash dividends	(2,878,000)		(2,869,000)	(2,860,000)
Net cash used in financing activities	(5,644,000)		(6,261,000)	(104,347,000)
Effect of exchange rate changes	(81,000)		(11,603,000)	(1,808,000)
Net increase (decrease) in cash and cash equivalents	87,242,000		84,784,000	(5,710,000)
Cash and cash equivalents at beginning of period	276,553,000		191,769,000	197,479,000
Cash and cash equivalents at end of period	363,795,000	[1]	276,553,000	191,769,000
Supplemental disclosure of cash flow information:
Interest paid	763,000		662,000	763,000
Income taxes paid, net of refunds received	$ 73,658,000		$ 59,826,000	$ 69,755,000

[1] In the second fiscal quarter of 2016, the Company adopted updated accounting guidance on the presentation of deferred income taxes. This adoption required that deferred tax liabilities and assets be classified as noncurrent in the Consolidated Balance Sheet. The Company elected to account for this change in presentation prospectively and prior periods were not retroactively adjusted.