CONSOLIDATED CONDENSED STATMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
Sales	$ 386,474	$ 389,692
Cost of sales	282,595	285,044
Gross profit	103,879	104,648
Operating and administrative expense	92,292	91,131
Depreciation and amortization	6,235	6,063
Operating income	5,352	7,454
Interest expense	(1,105)	(1,117)
Interest income	900	688
Income before income taxes	5,147	7,025
Income taxes	2,131	2,916
Net income	$ 3,016	$ 4,109
Common Class A [Member]
Net income per share:
Basic (in dollars per share)	$ 0.23	$ 0.32
Diluted (in dollars per share)	0.21	0.29
Common Class B [Member]
Net income per share:
Basic (in dollars per share)	0.15	0.21
Diluted (in dollars per share)	$ 0.15	$ 0.21