CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 27, 2012	Apr. 29, 2011	Apr. 27, 2012	Apr. 29, 2011
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) [Abstract]
Total revenue	$ 608,514	$ 582,525	$ 1,880,185	$ 1,821,493
Cost of goods sold	189,615	179,774	611,313	578,917
Gross profit	418,899	402,751	1,268,872	1,242,576
Labor and other related expenses	235,275	227,437	691,176	675,223
Other store operating expenses	109,947	112,112	338,127	336,235
Store operating income	73,677	63,202	239,569	231,118
General and administrative expenses	34,569	33,955	108,500	103,899
Impairment and store dispositions, net	0	(1,958)	0	(1,874)
Operating income	39,108	31,205	131,069	129,093
Interest expense	11,173	11,619	33,333	35,163
Income before income taxes	27,935	19,586	97,736	93,930
Provision for income taxes	8,961	4,432	29,351	26,265
Net income	$ 18,974	$ 15,154	$ 68,385	$ 67,665
Net income per share:
Basic (in dollars per share)	$ 0.82	$ 0.66	$ 2.97	$ 2.94
Diluted (in dollars per share)	$ 0.81	$ 0.64	$ 2.93	$ 2.85
Weighted average shares:
Basic (in shares)	23,132,730	23,048,279	22,990,544	23,039,388
Diluted (in shares)	23,535,765	23,602,333	23,329,230	23,705,155
Dividends declared per share (in dollars per share)	$ 0.65	$ 0.22	$ 1.15	$ 0.66