CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Net sales	$ 293,196	$ 290,151
Cost of products sold	146,657	144,086
Gross margin	146,539	146,065
Operating expenses:
Research and development	11,326	10,520
Selling, general and administrative	94,591	100,134
Total operating expenses	105,917	110,654
Operating income	40,622	35,411
Other (expense) income:
Investment and other (expense) income	(17)	216
Interest expense	(712)	(863)
Earnings before income taxes	39,893	34,764
Income tax expense	9,256	8,928
Net earnings	$ 30,637	$ 25,836
Weighted average common shares outstanding (in thousands):
Weighted average common shares outstanding, basic (in thousands):	52,201	51,440
Weighted average common shares outstanding, diluted (in thousands):	52,958	52,383
Class A Nonvoting Common Stock
Earnings Per Share
Net earnings per share, basic	$ 0.59	$ 0.50
Net earnings per share, diluted	0.58	0.49
Dividends	0.21	0.21
Class B Voting Common Stock
Earnings Per Share
Net earnings per share, basic	0.57	0.49
Net earnings per share, diluted	0.56	0.48
Dividends	$ 0.20	$ 0.19