Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jul. 31, 2014	Jul. 31, 2013
Current assets:
Cash and cash equivalents	$ 183,515	$ 77,916
Trading securities	22,793
Accounts receivable, trade, net of allowance for doubtful accounts of $63 and $64 at July 31, 2014 and July 31, 2013, respectively	123,948	142,098
Inventories	65,269	61,322
Prepaid expenses and other current assets	10,243	9,750
Total current assets	405,768	291,086
Property and equipment, net	25,126	34,290
Investments in affiliates	7,172	7,970
Goodwill	3,058	3,058
Other intangible assets, net	667	1,764
Other assets	9,855	5,528
Total assets	451,646	343,696
Current liabilities:
Accounts payable	105,045	110,148
Accrued restructuring	2,246	4,670
Accrued expenses	39,544	34,748
Other current liabilities	51,759	26,865
Total current liabilities	198,594	176,431
Long-term portion of accrued restructuring	39	494
Notes payable	73,391
Other long-term liabilities	8,004	9,866
Long-term liabilities	81,434	10,360
Total liabilities	280,028	186,791
Commitments and contingencies (Notes 8 and 10)
Stockholders' equity:
Preferred stock, $0.01 par value per share. Authorized 5,000,000 shares; zero issued or outstanding shares at July 31, 2014 and July 31, 2013	0	0
Common stock, $0.01 par value per share. Authorized 1,400,000,000 shares; 52,100,763 issued and outstanding shares at July 31, 2014; 51,575,893 issued and outstanding shares at July 31, 2013	521	516
Additional paid-in capital	7,450,541	7,419,806
Accumulated deficit	(7,293,412)	(7,277,130)
Accumulated other comprehensive income	13,968	13,713
Total stockholders' equity	171,618	156,905
Total liabilities and stockholders' equity	$ 451,646	$ 343,696