CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	12 Months Ended
	Jul. 28, 2017 USD ($)	Jul. 29, 2016 USD ($)	Jul. 31, 2015 USD ($)
Cash flows from operating activities:
Net income	$ 201,899	$ 189,299	$ 163,903
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	86,319	78,223	72,955
Loss on disposition of property and equipment	5,585	7,146	6,872
Share-based compensation	8,458	13,202	16,210
Excess tax benefit from share-based compensation	(2,636)	(2,626)	(4,705)
Changes in assets and liabilities:
Accounts receivable	1,273	(1,339)	4,654
Income taxes receivable	14,555	(13,558)	2,973
Inventories	(4,059)	750	12,368
Prepaid expenses and other current assets	(1,274)	(406)	(2,170)
Other assets	(4,344)	130	(1,659)
Accounts payable	(14,098)	(624)	34,640
Taxes withheld and accrued	(836)	(1,500)	2,800
Accrued employee compensation	9,752	(6,246)	6,485
Accrued employee benefits	(1,169)	211	1,667
Deferred revenue	8,348	5,048	9,155
Other current liabilities	4,470	(3,705)	4,034
Other long-term obligations	3,461	(6,269)	11,090
Deferred income taxes	5,063	13,642	(7,217)
Net cash provided by operating activities	320,767	271,378	334,055
Cash flows from investing activities:
Purchase of property and equipment	(110,591)	(114,022)	(90,855)
Proceeds from insurance recoveries of property and equipment	483	662	365
Proceeds from sale of property and equipment	503	845	1,876
Net cash used in investing activities	(109,605)	(112,515)	(88,614)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	0	0	406,250
(Taxes withheld) and proceeds from issuance of share-based compensation awards, net	(6,896)	(5,779)	(4,816)
Principal payments under long-term debt and other long-term obligations	0	0	(406,250)
Purchases and retirement of common stock	0	(14,653)	0
Deferred financing costs	0	0	(3,537)
Dividends on common stock	(196,867)	(255,546)	(95,699)
Excess tax benefit from share-based compensation	2,636	2,626	4,705
Net cash used in financing activities	(201,127)	(273,352)	(99,347)
Net increase (decrease) in cash and cash equivalents	10,035	(114,489)	146,094
Cash and cash equivalents, beginning of year	150,966	265,455	119,361
Cash and cash equivalents, end of year	161,001	150,966	265,455
Cash paid during the year for:
Interest, net of amounts capitalized	12,847	12,752	15,356
Income taxes	78,092	84,868	69,948
Supplemental schedule of non-cash investing and financing activities:
Capital expenditures accrued in accounts payable	6,743	6,379	5,800
Change in fair value of interest rate swaps	15,402	(16,188)	1,641
Change in deferred tax asset for interest rate swaps	(5,891)	6,173	(633)
Dividends declared but not yet paid	$ 31,296	$ 30,625	$ 99,678