CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Oct. 31, 2023	Oct. 31, 2022
Net sales	$ 331,983	$ 322,569
Cost of goods sold	160,264	167,305
Gross margin	171,719	155,264
Operating expenses:
Research and development	15,702	13,933
Selling, general and administrative	96,287	89,945
Total operating expenses	111,989	103,878
Operating income	59,730	51,386
Other income (expense):
Investment and other income (expense)	438	(157)
Interest expense	(766)	(894)
Income before income taxes	59,402	50,335
Income tax expense	12,161	10,894
Net income	$ 47,241	$ 39,441
Weighted average common shares outstanding:
Basic	48,505	49,868
Diluted	48,811	50,090
Class A Nonvoting Common Stock
Earnings Per Share
Basic	$ 0.97	$ 0.79
Diluted	0.97	0.79
Class B Voting Common Stock
Earnings Per Share
Basic	0.96	0.78
Diluted	$ 0.95	$ 0.77