Inventories (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Oct. 31, 2013
Inventories
Raw materials	$ 61,429		$ 53,274
Work-in-process	8,268		7,773
Finished goods	172,321		153,855
Deferred cost of goods sold	103,701		75,764
Inventories before provision	345,719		290,666
Provision for excess and obsolescence	(52,627)		(41,563)
Total inventories	293,092		249,103
Provisions	$ 22,026	$ 15,301