CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Apr. 30, 2011	May 01, 2010	Apr. 30, 2011	May 01, 2010
Net sales	$ 1,203,983	$ 985,694	$ 3,371,399	$ 2,768,679
Cost of sales	985,439	803,287	2,761,891	2,255,065
Gross profit	218,544	182,407	609,508	513,614
Operating expenses	179,638	148,565	509,204	424,976
Total operating expenses	179,638	148,565	509,204	424,976
Operating income	38,906	33,842	100,304	88,638
Other expense (income):
Interest expense	1,146	1,491	3,830	4,429
Interest income	(750)	(89)	(1,015)	(199)
Other, net	(427)	(40)	(682)	(60)
Total other expense (income)	(31)	1,362	2,133	4,170
Income before income taxes	38,937	32,480	98,171	84,468
Provision for income taxes	15,575	12,992	38,676	33,787
Net income	$ 23,362	$ 19,488	$ 59,495	$ 50,681
Basic per share data:
Net income (in dollars per share)	$ 0.48	$ 0.45	$ 1.26	$ 1.18
Weighted average basic shares of common stock outstanding (in shares)	48,406	43,245	47,129	43,085
Diluted per share data:
Net income (in dollars per share)	$ 0.48	$ 0.45	$ 1.25	$ 1.17
Weighted average diluted shares of common stock outstanding (in shares)	48,793	43,536	47,470	43,328