Restructuring Costs (Details) $ in Thousands	9 Months Ended
	Jul. 31, 2019 USD ($) employee	Jul. 31, 2018 USD ($) employee
Activity and balance of the restructuring liability accounts
Balance at beginning of period	$ 3,847	$ 2,939
Additional liability recorded	11,696	16,679
Cash payments	(11,652)	(14,071)
Balance at end of period	3,891	5,547
Current restructuring liabilities	2,744	4,256
Non-current restructuring liabilities	1,147	1,291
Workforce reduction
Activity and balance of the restructuring liability accounts
Balance at beginning of period	2,108	1,291
Additional liability recorded	10,309	12,876
Cash payments	(10,021)	(10,987)
Balance at end of period	2,396	3,180
Current restructuring liabilities	2,396	3,180
Non-current restructuring liabilities	$ 0	$ 0
Number of employee reduction | employee	225	230
Consolidation of excess facilities
Activity and balance of the restructuring liability accounts
Balance at beginning of period	$ 1,739	$ 1,648
Additional liability recorded	1,387	3,803
Cash payments	(1,631)	(3,084)
Balance at end of period	1,495	2,367
Current restructuring liabilities	348	1,076
Non-current restructuring liabilities	$ 1,147	$ 1,291