Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jul. 31, 2012	Jul. 31, 2011
Current assets:
Cash and cash equivalents	$ 187,011	$ 169,656
Accounts receivable, net of allowance for doubtful accounts of $344 and $599 as of July 31, 2012 and 2011, respectively	96,117	88,558
Inventories	108,944	105,483
Refundable and deferred income taxes	9,786	9,677
Other current assets	6,937	9,839
Total current assets	408,795	383,213
Property, plant, and equipment, net	96,769	83,157
Capitalized software, net	192	1,594
Intangible assets, net	34,340	37,403
Goodwill	1,849	1,849
Other assets	5,302	6,117
Deferred income taxes	10,749	8,219
Total Assets	557,996	521,552
Current liabilities:
Accounts payable	38,200	37,478
Accrued liabilities	41,746	41,438
Advance payments and deferred revenue	14,323	9,249
Accrued income taxes	5,670	661
Total current liabilities	99,939	88,826
Long-term liabilities:
Accrued income taxes	4,675	5,322
Other long-term liabilities	7,063	3,932
Total long-term liabilities	11,738	9,254
Commitments, guarantees, and contingencies (Notes 12 and 13)
Stockholders' equity:
Common stock, $.05 par value; 30,000,000 shares authorized and 12,162,724 shares issued and outstanding as of July 31, 2012; 30,000,000 shares authorized and 12,535,007 shares issued and outstanding as of July 31, 2011	608	627
Capital in excess of par value	100,222	85,407
Retained earnings	343,186	325,941
Accumulated other comprehensive income	2,303	11,497
Total stockholders' equity	446,319	423,472
Total Liabilities and Stockholders' Equity	$ 557,996	$ 521,552