Inventories (Details) - USD ($) $ in Thousands	6 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Oct. 31, 2017
Inventory Disclosure [Abstract]
Raw materials	$ 48,356		$ 52,898
Work-in-process	13,253		18,623
Finished goods	165,733		185,488
Deferred cost of goods sold	55,161		61,340
Inventories before provision	282,503		318,349
Provision for excess and obsolescence	(51,165)		(51,206)
Total inventories	231,338		$ 267,143
Provisions	$ 14,977	$ 19,623