Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 28, 2017	Jul. 29, 2016	Jul. 31, 2015
Current [Abstract]
Federal	$ 83,743	$ 62,054	$ 71,386
State	7,567	6,447	6,050
Deferred [Abstract]
Federal	4,696	12,477	(6,178)
State	982	(3,858)	3,040
Total provision for income taxes	$ 96,988	77,120	74,298
U.S. federal statutory rate used	35.00%
Provision computed at federal statutory income tax rate	$ 104,611	93,247	83,370
State and local income taxes, net of federal benefit	5,856	1,427	6,378
Employer tax credits for FICA taxes paid on employee tip income	(11,543)	(11,048)	(10,681)
Other employer tax credits	(2,814)	(7,326)	(5,058)
Other-net	878	820	289
Total provision for income taxes	96,988	77,120	74,298
Deferred tax assets [Abstract]
Compensation and employee benefits	10,110	13,937
Deferred rent	18,270	17,183
Accrued liabilities	13,233	12,466
Insurance reserves	12,401	11,444
Inventory	4,411	4,368
Other	2,767	8,718
Deferred tax assets	61,192	68,116
Deferred tax liabilities [Abstract]
Property and equipment	100,373	97,695
Inventory	10,906	9,803
Other	12,273	12,024
Deferred tax liabilities	123,552	119,522
Net deferred tax liability	62,360	51,406
Reconciliation of gross liability for uncertain tax positions [Roll Forward]
Balance at beginning of year	21,899	25,507	22,832
Tax positions related to the current year [Abstract]
Additions	4,003	4,860	3,994
Reductions	0	0	0
Tax positions related to prior year [Abstract]
Additions	582	2,186	118
Reductions	(2,966)	(6,896)	(227)
Settlements	(1,027)	(2,324)	(204)
Expiration of statute of limitations	(1,760)	(1,434)	(1,006)
Balance at end of year	20,731	21,899	25,507
Uncertain tax positions	13,475	14,234	16,579
Potential interest and penalties [Abstract]
Interest and penalties	6,128	5,497	9,754
Interest and penalties [Abstract]
Interest and penalties related to uncertain tax positions	631	$ (4,256)	$ 1,194
Minimum [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Potential decrease of liabilities for uncertain tax positions within the next twelve months	3,000
Maximum [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Potential decrease of liabilities for uncertain tax positions within the next twelve months	$ 4,000