RESTRUCTURING COSTS (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Activity and balance of the restructuring liability accounts
Balance at beginning of period	$ 2,838	$ 1,279
Additional liability recorded	2,395	384
Additional liability recorded		393
Adjustment to previous estimates		(9)
Cash payments	(3,164)	(761)
Balance at end of period	2,069	902
Current restructuring liabilities	1,633	707
Non-current restructuring liabilities	436	195
Workforce reduction
Activity and balance of the restructuring liability accounts
Balance at beginning of period	868	591
Additional liability recorded	2,008
Additional liability recorded		393
Adjustment to previous estimates		0
Cash payments	(2,512)	(613)
Balance at end of period	364	371
Current restructuring liabilities	364	371
Non-current restructuring liabilities	0	0
Consolidation of excess facilities
Activity and balance of the restructuring liability accounts
Balance at beginning of period	1,970	688
Additional liability recorded	387
Additional liability recorded		0
Adjustment to previous estimates		(9)
Cash payments	(652)	(148)
Balance at end of period	1,705	531
Current restructuring liabilities	1,269	336
Non-current restructuring liabilities	$ 436	$ 195