Benefit Plans 1 (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended			3 Months Ended		12 Months Ended	3 Months Ended		12 Months Ended	3 Months Ended		12 Months Ended	3 Months Ended		12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2012 Cost of Sales [Member]	Oct. 31, 2011 Cost of Sales [Member]	Oct. 31, 2012 Cost of Sales [Member]	Oct. 31, 2012 Other Research and Development Expense [Member]	Oct. 31, 2011 Other Research and Development Expense [Member]	Oct. 31, 2012 Other Research and Development Expense [Member]	Oct. 31, 2012 Selling, General and Administrative Expenses [Member]	Oct. 31, 2011 Selling, General and Administrative Expenses [Member]	Oct. 31, 2012 Selling, General and Administrative Expenses [Member]	Oct. 31, 2012 Research and Development Expense [Member]	Oct. 31, 2011 Research and Development Expense [Member]	Oct. 31, 2012 Research and Development Expense [Member]
Weighted Average Assumptions [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance	5,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	4,217,489
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	7 years 0 months	7 years 0 months	7 years 0 months
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	1.60%	3.00%	3.40%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate	75.50%	73.00%	72.20%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	0.00%	0.00%	0.00%
Allocated Share-based Compensation Expense	$ 2,049	$ 2,573	$ 2,960	$ 497	$ 726	$ 761	$ 90	$ 115	$ 175	$ 1,182	$ 1,275	$ 1,397	$ 280	$ 457	$ 627