CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Oct. 31, 2017	Oct. 31, 2016
Net sales	$ 290,151	$ 280,176
Cost of products sold	144,086	139,818
Gross margin	146,065	140,358
Operating expenses:
Research and development	10,520	9,146
Selling, general and administrative	100,134	98,004
Total operating expenses	110,654	107,150
Operating income	35,411	33,208
Other income (expense):
Investment and other income (expense)	216	(489)
Interest expense	(863)	(1,732)
Earnings before income taxes	34,764	30,987
Income tax expense	8,928	8,434
Net earnings	$ 25,836	$ 22,553
Weighted average common shares outstanding (in thousands):
Weighted average common shares outstanding, basic (in thousands):	51,440	50,634
Weighted average common shares outstanding, diluted (in thousands):	52,383	51,455
Class A Nonvoting Common Stock
Earnings Per Share
Net earnings per share, basic	$ 0.50	$ 0.45
Net earnings per share, diluted	0.49	0.44
Dividends	$ 0.21	$ 0.21
Class B Voting Common Stock
Other income (expense):
Earnings from continuing operations	$ 25,021	$ 21,751
Earnings Per Share
Net earnings per share, basic	$ 0.49	$ 0.43
Net earnings per share, diluted	0.48	0.42
Dividends	$ 0.19	$ 0.19