CONSOLIDATED CONDENSED STATMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 25, 2015	Apr. 26, 2014	Apr. 25, 2015	Apr. 26, 2014
Sales	$ 387,100	$ 372,511	$ 1,178,035	$ 1,121,798
Cost of sales	280,002	272,074	857,008	822,297
Gross profit	107,098	100,437	321,027	299,501
Operating and administrative expense	90,848	88,524	272,307	264,960
Depreciation and amortization	5,676	5,516	17,573	16,038
Operating income	10,574	6,397	31,147	18,503
Interest expense	(1,133)	(916)	(3,404)	(2,673)
Interest income	603	659	1,829	2,008
Income before income taxes	10,044	6,140	29,572	17,838
Income taxes	(3,162)	2,952	5,884	18,663
Net income (loss)	$ 13,206	$ 3,188	$ 23,688	$ (825)
Common Class A [Member]
Net income (loss) per share:
Basic (in dollars per share)	$ 1.05	$ 0.26	$ 1.89	$ (0.06)
Diluted (in dollars per share)	$ 0.93	$ 0.23	$ 1.68	$ (0.06)
Common Class B [Member]
Net income (loss) per share:
Basic (in dollars per share)	$ 0.68	$ 0.17	$ 1.23	$ (0.05)
Diluted (in dollars per share)	$ 0.68	$ 0.17	$ 1.22	$ (0.05)