CONSOLIDATED STATMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Oct. 27, 2018	Oct. 28, 2017
Sales	$ 401,550	$ 387,340
Cost of sales	289,437	282,548
Gross profit	112,113	104,792
Operating and administrative expense	96,293	93,205
Depreciation and amortization	6,898	6,235
Operating income	8,922	5,352
Interest expense	(1,116)	(1,105)
Interest income	1,178	900
Income before income taxes	8,984	5,147
Income taxes	2,715	2,131
Net income	$ 6,269	$ 3,016
Common Class A [Member]
Net income per share:
Basic (in dollars per share)	$ 0.49	$ 0.23
Diluted (in dollars per share)	0.43	0.21
Common Class B [Member]
Net income per share:
Basic (in dollars per share)	0.32	0.15
Diluted (in dollars per share)	$ 0.32	$ 0.15