CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2017	Jan. 31, 2016
Net sales	$ 268,001	$ 268,630	$ 548,177	$ 551,703
Cost of products sold	133,843	135,738	273,661	279,462
Gross margin	134,158	132,892	274,516	272,241
Operating expenses:
Research and development	9,481	9,097	18,627	17,666
Selling, general and administrative	94,715	100,206	192,719	200,884
Total operating expenses	104,196	109,303	211,346	218,550
Operating income	29,962	23,589	63,170	53,691
Other income (expense):
Investment and other income (expense)	596	(992)	107	(1,751)
Interest expense	(1,458)	(2,130)	(3,190)	(4,281)
Earnings before income taxes	29,100	20,467	60,087	47,659
Income tax expense	3,803	5,177	12,237	13,666
Net earnings	$ 25,297	$ 15,290	$ 47,850	$ 33,993
Weighted average common shares outstanding (in thousands):
Weighted average common shares outstanding, basic (in thousands):	51,054	50,527	50,844	50,778
Weighted average common shares outstanding, diluted (in thousands):	51,954	50,647	51,721	50,868
Class A nonvoting common stock
Earnings Per Share
Net earnings per share, basic	$ 0.50	$ 0.30	$ 0.94	$ 0.67
Net earnings per share, diluted	0.49	0.30	0.93	0.67
Dividends	$ 0.21	$ 0.20	$ 0.41	$ 0.41
Class B voting common stock
Other income (expense):
Earnings from continuing operations	$ (25,297)	$ 15,290	$ 47,048	$ 33,209
Earnings Per Share
Net earnings per share, basic	$ 0.50	$ 0.30	$ 0.93	$ 0.65
Net earnings per share, diluted	0.49	0.30	0.91	0.65
Dividends	$ 0.21	$ 0.20	$ 0.39	$ 0.39