Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Oct. 31, 2011	Oct. 31, 2010
Current assets:
Cash and cash equivalents	$ 51,415	$ 20,467
Investments - U.S. treasury securities	12,016	25,019
Accounts receivable, net of allowance for doubtful accounts of $555 and $393, respectively	21,950	18,066
Inventories, net	40,101	33,404
Other current assets	7,466	5,253
Total current assets	132,948	102,209
Property, plant and equipment, net	23,925	26,679
Investments - U.S. treasury securities	0	9,071
Investment in and loans to affiliate	10,466	9,837
Other assets, net	16,291	2,733
Total assets	183,630	150,529
Current liabilities:
Current portion of long-term debt	5,056	976
Accounts payable	14,143	10,267
Accounts payable due to affiliate	104	575
Accrued liabilities	26,894	16,721
Deferred revenue	64,114	25,499
Preferred stock obligation of subsidiary	3,854	0
Total current liabilities	114,165	54,038
Long-term deferred revenue	7,000	8,042
Long-term preferred stock obligation of subsidiary	12,878	0
Long-term debt and other liabilities	4,105	4,056
Total liabilities	138,148	66,136
Redeemable preferred stock of subsidiary	0	16,849
Redeemable preferred stock (liquidation preference of $64,020 at October 31, 2011 and October 31, 2010)	59,857	59,857
Shareholders' (deficit) equity
Common stock ($.0001 par value; 225,000,000 shares authorized; 138,400,497 and 112,965,725 shares issued and outstanding at October 31, 2011 and October 31, 2010, respectively)	13	11
Additional paid-in capital	687,857	663,951
Accumulated deficit	(701,336)	(655,623)
Accumulated other comprehensive income	15	11
Treasury stock, Common, at cost (5,679 shares at October 31, 2011 and October 31, 2010)	(53)	(53)
Deferred compensation	53	53
Total shareholders' (deficit) equity	(13,451)	8,350
Noncontrolling interest in subsidiaries	(924)	(663)
Total (deficit) equity	(14,375)	7,687
Total liabilities and (deficit) equity	$ 183,630	$ 150,529