CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2020
Net sales	$ 1,302,062	$ 1,144,698	$ 1,081,299
Cost of goods sold	670,510	583,252	552,734
Gross margin	631,552	561,446	528,565
Operating expenses:
Research and development	58,548	44,551	40,662
Selling, general and administrative	379,992	349,768	336,059
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	0	0	8,665
Total operating expenses	438,540	394,319	390,542
Operating income	193,012	167,127	138,023
Other income (expense):
Investment and other income	244	4,333	5,079
Interest expense	(1,276)	(437)	(2,166)
Income before income taxes and losses of unconsolidated affiliate	191,980	171,023	140,936
Income tax expense	42,001	35,610	28,321
Income before losses of unconsolidated affiliate	149,979	135,413	112,615
Equity in losses of unconsolidated affiliate	0	(5,754)	(246)
Net income	$ 149,979	$ 129,659	$ 112,369
Weighted average common shares outstanding:
Basic	51,321	52,039	52,763
Diluted	51,651	52,409	53,231
Class A Nonvoting Common Stock
Earnings per share:
Basic	$ 2.92	$ 2.49	$ 2.13
Diluted	2.90	2.47	2.11
Class B Voting Common Stock
Earnings per share:
Basic	2.91	2.48	2.11
Diluted	$ 2.89	$ 2.46	$ 2.10