Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013	Jul. 31, 2012
Current assets:
Cash and cash equivalents	$ 91,347	$ 187,011
Accounts receivable, net of allowance for doubtful accounts of $2,709 and $344 as of April 30, 2013 and July 31, 2012, respectively	86,830	96,117
Inventory	141,064	108,944
Refundable and deferred income taxes	10,102	9,786
Other current assets	10,351	6,937
Total current assets	339,694	408,795
Property, plant, and equipment, net	107,969	96,769
Intangible assets, net	57,121	34,340
Goodwill	50,229	1,849
Deferred income taxes	5,658	10,749
Other assets	5,938	5,494
Total Assets	566,609	557,996
Current liabilities:
Accounts payable	31,348	38,200
Accrued liabilities	37,376	41,746
Advance payments and deferred revenue	13,553	14,323
Accrued income taxes		5,670
Total current liabilities	82,277	99,939
Long-term liabilities:
Accrued income taxes	4,541	4,675
Other long-term liabilities	8,462	7,063
Total long-term liabilities	13,003	11,738
Commitments and guarantees (Note 13)
Stockholders' equity:
Common stock, $.05 par value	613	608
Capital in excess of par value	110,882	100,222
Retained earnings	353,275	343,186
Accumulated other comprehensive income	6,559	2,303
Total stockholders' equity	471,329	446,319
Total Liabilities and Stockholders' Equity	$ 566,609	$ 557,996