CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Oct. 31, 2014	Oct. 31, 2013
Net sales	$ 310,240	$ 307,530
Cost of products sold	160,079	149,683
Gross margin	150,161	157,847
Operating expenses:
Research and development	9,631	8,587
Selling, general and administrative	109,279	112,733
Restructuring charges	4,278	6,840
Total operating expenses	123,188	128,160
Operating income	26,973	29,687
Other income and (expense):
Investment and other income	323	762
Interest expense	(2,891)	(3,720)
Earnings from continuing operations before income taxes	24,405	26,729
Income tax expense	8,906	8,595
Earnings from continuing operations	15,499	18,134
(Loss) earnings from discontinued operations, net of income taxes	(1,915)	5,794
Net earnings	13,584	23,928
Weighted average common shares outstanding (in thousands):
Weighted average common shares outstanding, basic (in thousands):	51,251	52,071
Weighted average common shares outstanding, diluted (in thousands):	51,313	52,419
Class A nonvoting common stock
Other income and (expense):
Earnings from continuing operations	15,499	18,089
Earnings Per Share
Earnings from continuing operations per basic share	$ 0.30	$ 0.35
Earnings from continuing operations per diluted share	$ 0.30	$ 0.35
(Loss) earnings from discontinued operations per basic share	$ (0.03)	$ 0.11
(Loss) earnings from discontinued operations per diluted share	$ (0.04)	$ 0.11
Net earnings per share, basic	$ 0.27	$ 0.46
Net earnings per share, diluted	$ 0.26	$ 0.46
Dividends	$ 0.20	$ 0.195
Class B voting common stock
Other income and (expense):
Earnings from continuing operations	$ 14,704	$ 17,270
Earnings Per Share
Earnings from continuing operations per basic share	$ 0.29	$ 0.33
Earnings from continuing operations per diluted share	$ 0.29	$ 0.33
(Loss) earnings from discontinued operations per basic share	$ (0.04)	$ 0.11
(Loss) earnings from discontinued operations per diluted share	$ (0.04)	$ 0.11
Net earnings per share, basic	$ 0.25	$ 0.44
Net earnings per share, diluted	$ 0.25	$ 0.44
Dividends	$ 0.183	$ 0.178