Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Nov. 24, 2018	Nov. 25, 2017
Cash flows from operating activities:
Net income	$ 38,320	$ 34,206
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	21,795	19,540
Amortization of intangible assets	3,321	3,167
Amortization of deferred financing costs	28	28
Gain on sale of assets	(19)	0
Share-based compensation	1,182	1,114
Accretion on environmental contingencies	189	173
Accretion on asset retirement obligations	220	240
Deferred income taxes	(497)	2,031
Changes in assets and liabilities, net of acquisitions:
Receivables, less reserves	(12,165)	(12,879)
Inventories	(1,061)	(2,882)
Rental merchandise in service	(4,513)	(82)
Prepaid expenses and other current assets and Other assets	(6,884)	(4,901)
Accounts payable	(1,264)	(1,092)
Accrued liabilities	(19,651)	(7,456)
Prepaid and accrued income taxes	13,256	16,420
Net cash provided by operating activities	32,257	47,627
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired	0	(2,671)
Capital expenditures	(23,285)	(19,033)
Proceeds from sale of assets	90	0
Other	33	318
Net cash used in investing activities	(23,162)	(21,386)
Cash flows from financing activities:
Proceeds from exercise of share-based awards	0	267
Taxes withheld and paid related to net share settlement of equity awards	(140)	(522)
Payment of cash dividends	(2,070)	(726)
Net cash used in financing activities	(2,210)	(981)
Effect of exchange rate changes	(861)	(976)
Net increase in cash, cash equivalents and short-term investments	6,024	24,284
Cash, cash equivalents and short-term investments at beginning of period	270,512	349,752
Cash, cash equivalents and short-term investments at end of period	276,536	374,036
Supplemental disclosure of cash flow information:
Non-cash capital expenditures	$ 14,894	$ 10,994