Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2019	Aug. 25, 2018	Aug. 26, 2017
Cash flows from operating activities:
Net income	$ 179,134	$ 163,895	$ 70,196
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	103,333	96,662	88,879
Amortization of deferred financing costs	112	112	112
Forgiveness of a liability	(7,346)
Other	(283)	(232)	(567)
Share-based compensation	5,761	4,638	12,462
Accretion on environmental contingencies	755	692	600
Accretion on asset retirement obligations	865	935	853
Impairment charge			55,800
Deferred income taxes	8,896	(7,861)	955
Changes in assets and liabilities, net of acquisitions:
Receivables, less reserves	(3,189)	(12,420)	(22,232)
Inventories	(10,736)	(11,051)	1,865
Rental merchandise in service	(10,324)	(21,572)	(5,384)
Prepaid expenses and other current assets and Other assets	(8,011)	(5,643)	12,903
Accounts payable	3,365	4,573	9,594
Accrued liabilities	(1,027)	12,233	11,728
Prepaid and accrued income taxes	20,837	5,112	(19,490)
Net cash provided by operating activities	282,142	230,073	218,274
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired	(4,919)	(42,665)	(125,457)
Capital expenditures, including capitalization of software costs	(119,815)	(112,747)	(108,554)
Proceeds from sale of assets	405	1,777	876
Other		(263)	98
Net cash used in investing activities	(124,329)	(153,898)	(233,037)
Cash flows from financing activities:
Proceeds from exercise of share-based awards, including excess tax benefits in fiscal 2017	51	461	3,102
Taxes withheld and paid related to net share settlement of equity awards	(2,767)	(3,180)	(2,386)
Repurchase of Common Stock	(30,515)	(146,011)
Payment of cash dividends	(8,260)	(4,218)	(2,898)
Net cash used in financing activities	(41,491)	(152,948)	(2,182)
Effect of exchange rate changes	(1,493)	(2,467)	2,902
Net (decrease) increase in cash, cash equivalents and short-term investments	114,829	(79,240)	(14,043)
Cash, cash equivalents and short-term investments at beginning of period	270,512	349,752	363,795
Cash, cash equivalents and short-term investments at end of period	385,341	270,512	349,752
Supplemental disclosure of cash flow information:
Non-cash capital expenditures	16,244	15,050	10,625
Interest paid	750	538	801
Income taxes paid, net of refunds received	$ 28,354	$ 28,355	$ 62,165