Condensed Consolidated Statements of Operations and Comprehensive Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Oct. 31, 2012	Oct. 31, 2011
Net Sales	$ 875,612	$ 673,000
Cost of products sold	775,020	598,022
Gross profit	100,592	74,978
Selling, general and administrative expenses	51,465	38,460
Amortization of intangible assets	2,768	2,847
Interest income	779	1,069
Interest expense	80	143
Other income, net	553	51
Income before income taxes	47,611	34,648
Income taxes	16,623	12,290
Net income	30,988	22,358
Weighted average common shares outstanding:
Basic	52,928,467	54,992,184
Diluted	53,035,582	55,014,007
Earnings per common share:
Basic	$ 0.59	$ 0.41
Diluted	$ 0.58	$ 0.41
Regular dividends declared and paid per common share	$ 0.18	$ 0.15
Net income	30,988	22,358
Unrealized appreciation (depreciation) on investments, net of tax effects of $1 and $18	1	(31)
Comprehensive income	$ 30,989	$ 22,327