Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Oct. 31, 2011	Oct. 31, 2010
Net sales	$ 349,508	$ 329,588
Cost of products sold	181,677	165,076
Gross margin	167,831	164,512
Operating expenses:
Research and development	9,809	9,944
Selling, general and administrative	108,932	109,324
Restructuring charges	0	3,641
Total operating expenses	118,741	122,909
Operating income	49,090	41,603
Other income and (expense):
Investment and other income (expense)	(202)	290
Interest expense	(5,047)	(5,687)
Income before income taxes	43,841	36,206
Income taxes	11,109	9,925
Net income	$ 32,732	$ 26,281
Weighted average common shares outstanding (in thousands):
Basic	52,657	52,448
Diluted	52,954	52,810
Class A Nonvoting Common Stock
Net income per common share:
Basic net income	$ 0.62	$ 0.50
Diluted net income	$ 0.62	$ 0.50
Dividends	$ 0.185	$ 0.18
Class B Common Stock
Net income per common share:
Basic net income	$ 0.60	$ 0.48
Diluted net income	$ 0.60	$ 0.48
Dividends	$ 0.168	$ 0.163