CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 27, 2018	Apr. 28, 2017	Apr. 27, 2018	Apr. 28, 2017
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) [Abstract]
Total revenue	$ 721,413	$ 700,410	$ 2,219,552	$ 2,183,063
Cost of goods sold (exclusive of depreciation and rent)	217,719	205,882	689,420	673,911
Labor and other related expenses	257,360	250,819	769,154	759,193
Other store operating expenses	147,616	136,231	441,843	415,136
Store operating income	98,718	107,478	319,135	334,823
General and administrative expenses	35,409	36,000	108,314	104,905
Operating income	63,309	71,478	210,821	229,918
Interest expense	3,594	3,389	10,892	10,703
Income before income taxes	59,715	68,089	199,929	219,215
Provision for income taxes	10,968	21,165	13,663	71,209
Net income	$ 48,747	$ 46,924	$ 186,266	$ 148,006
Net income per share:
Basic (in dollars per share)	$ 2.03	$ 1.95	$ 7.76	$ 6.16
Diluted (in dollars per share)	$ 2.03	$ 1.95	$ 7.74	$ 6.14
Weighted average shares:
Basic (in shares)	24,003,611	24,042,573	24,013,435	24,028,175
Diluted (in shares)	24,065,783	24,121,203	24,075,834	24,111,753
Dividends declared per share (in dollars per share)	$ 1.20	$ 1.15	$ 3.60	$ 3.45
Dividends paid per share (in dollars per share)	$ 1.20	$ 1.15	$ 3.60	$ 3.45