Consolidated Statements of Operations Consolidated Statements of Operations Parentheticals (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014
Product sales	$ 20,221us-gaap_SalesRevenueGoodsNet	$ 27,707us-gaap_SalesRevenueGoodsNet	$ 53,639us-gaap_SalesRevenueGoodsNet	$ 62,167us-gaap_SalesRevenueGoodsNet
Service agreements and license revenues	4,618us-gaap_SalesRevenueServicesNet	7,177us-gaap_SalesRevenueServicesNet	8,489us-gaap_SalesRevenueServicesNet	12,137us-gaap_SalesRevenueServicesNet
Advanced technologies contract revenues	3,761	3,390	8,142	8,404
Related Party [Member]
Product sales	16,100	27,500	38,200	56,600
Service agreements and license revenues	2,900	2,400	4,800	5,500
Advanced technologies contract revenues	$ 200	$ 60	$ 600	$ 100

The amount of compensation earned (contract income) under a research and development arrangement accounted for as a contract to perform research and development for others.

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