CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Net sales	$ 298,421	$ 275,927	$ 876,352	$ 824,104
Cost of products sold	147,339	136,018	435,513	409,679
Gross margin	151,082	139,909	440,839	414,425
Operating expenses:
Research and development	11,678	9,950	33,512	28,577
Selling, general and administrative	101,695	98,409	299,411	291,128
Total operating expenses	113,373	108,359	332,923	319,705
Operating income	37,709	31,550	107,916	94,720
Other income (expense):
Investment and other income	31	453	1,303	560
Interest expense	(761)	(1,375)	(2,453)	(4,565)
Earnings before income taxes	36,979	30,628	106,766	90,715
Income tax expense	10,979	8,075	50,657	20,312
Net earnings	$ 26,000	$ 22,553	$ 56,109	$ 70,403
Weighted average common shares outstanding (in thousands):
Weighted average common shares outstanding, basic (in thousands):	51,747	51,227	51,628	50,972
Weighted average common shares outstanding, diluted (in thousands):	52,729	52,201	52,610	51,882
Class A nonvoting common stock
Earnings Per Share
Net earnings per share, basic	$ 0.50	$ 0.44	$ 1.09	$ 1.38
Net earnings per share, diluted	0.49	0.43	1.07	1.36
Dividends	$ 0.21	$ 0.21	$ 0.62	$ 0.62
Class B voting common stock
Other income (expense):
Earnings from continuing operations	$ (26,000)	$ 22,553	$ 55,294	$ 69,601
Earnings Per Share
Net earnings per share, basic	$ 0.50	$ 0.44	$ 1.07	$ 1.37
Net earnings per share, diluted	0.49	0.43	1.05	1.34
Dividends	$ 0.21	$ 0.21	$ 0.61	$ 0.60