CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Oct. 31, 2022	Oct. 31, 2021
Net sales	$ 322,569	$ 321,475
Cost of goods sold	167,305	166,487
Gross margin	155,264	154,988
Operating expenses:
Research and development	13,933	13,907
Selling, general and administrative	89,945	96,746
Total operating expenses	103,878	110,653
Operating income	51,386	44,335
Other (expense) income:
Investment and other (expense) income	(157)	543
Interest expense	(894)	(182)
Income before income taxes	50,335	44,696
Income tax expense	10,894	9,650
Net income	$ 39,441	$ 35,046
Weighted average common shares outstanding:
Basic	49,868	51,973
Diluted	50,090	52,436
Class A Nonvoting Common Stock
Earnings Per Share
Basic	$ 0.79	$ 0.67
Diluted	0.79	0.67
Class B Voting Common Stock
Earnings Per Share
Basic	0.78	0.66
Diluted	$ 0.77	$ 0.65