Inventories (Details) - USD ($) $ in Thousands	9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Oct. 31, 2017
Inventory Disclosure [Abstract]
Raw materials	$ 54,003		$ 52,898
Work-in-process	11,100		18,623
Finished goods	173,419		185,488
Deferred cost of goods sold	38,525		61,340
Inventories before provision	277,047		318,349
Provision for excess and obsolescence	(49,162)		(51,206)
Total inventories	227,885		$ 267,143
Provisions	$ 19,942	$ 28,727