Inventories (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Oct. 31, 2012
Inventories
Raw materials	$ 51,549		$ 39,678
Work-in-process	7,931		10,736
Finished goods	147,757		178,210
Deferred cost of goods sold	70,955		71,484
Inventories before provision	278,192		300,108
Provision for excess and obsolescence	(42,662)		(40,010)
Total inventories	235,530		260,098
Provisions	$ 15,301	$ 19,071