CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 29, 2016	Jan. 30, 2015	Jan. 29, 2016	Jan. 30, 2015
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) [Abstract]
Total revenue	$ 764,002	$ 755,966	$ 1,466,631	$ 1,439,394
Cost of goods sold (exclusive of depreciation and rent)	264,932	262,155	487,905	484,450
Labor and other related expenses	251,935	251,674	496,257	494,001
Other store operating expenses	141,103	133,726	276,810	263,898
Store operating income	106,032	108,411	205,659	197,045
General and administrative expenses	35,507	37,190	69,826	70,382
Operating income	70,525	71,221	135,833	126,663
Interest expense	3,569	4,684	7,113	9,108
Income before income taxes	66,956	66,537	128,720	117,555
Provision for income taxes	18,714	19,374	39,613	36,368
Net income	$ 48,242	$ 47,163	$ 89,107	$ 81,187
Net income per share:
Basic (in dollars per share)	$ 2.02	$ 1.97	$ 3.72	$ 3.40
Diluted (in dollars per share)	$ 2.01	$ 1.96	$ 3.70	$ 3.38
Weighted average shares:
Basic (in shares)	23,937,812	23,914,797	23,947,183	23,888,496
Diluted (in shares)	24,047,042	24,032,389	24,060,047	24,016,913
Dividends declared per share (in dollars per share)	$ 1.10	$ 1.00	$ 2.20	$ 2.00
Dividends paid per share (in dollars per share)	$ 1.10	$ 1.00	$ 5.20	$ 2.00