Restructuring Costs (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013	Oct. 31, 2013
Activity and balance of the restructuring liability accounts
Balance at beginning of period			$ 2,016	$ 5,049
Additional liability recorded	0	1,509	115	6,539
Non-cash disposal				(735)
Cash payments			(314)	(7,886)
Balance at end of period	1,817	2,967	1,817	2,967
Current restructuring liabilities	677	2,238	677	2,238	674
Non-current restructuring liabilities	1,140	729	1,140	729
Workforce reduction [Member]
Activity and balance of the restructuring liability accounts
Balance at beginning of period			80	1,449
Additional liability recorded			106	4,916
Non-cash disposal				0
Cash payments			(136)	(5,733)
Balance at end of period	50	632	50	632
Current restructuring liabilities	50	632	50	632
Non-current restructuring liabilities	0	0	0	0
Consolidation of excess facilities [Member]
Activity and balance of the restructuring liability accounts
Balance at beginning of period			1,936	3,600
Additional liability recorded			9	1,623
Non-cash disposal				(735)
Cash payments			(178)	(2,153)
Balance at end of period	1,767	2,335	1,767	2,335
Current restructuring liabilities	627	1,606	627	1,606
Non-current restructuring liabilities	$ 1,140	$ 729	$ 1,140	$ 729