Restructuring Costs (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2014	Jul. 31, 2013	Oct. 31, 2013
Activity and balance of the restructuring liability accounts
Balance at beginning of period			$ 2,016	$ 5,049
Additional liability recorded	63	202	178	6,741
Non-cash disposal				(747)
Cash payments			(477)	(9,106)
Balance at end of period	1,717	1,937	1,717	1,937
Current restructuring liabilities	653	798	653	798	674
Non-current restructuring liabilities	1,064	1,139	1,064	1,139
Workforce reduction
Activity and balance of the restructuring liability accounts
Balance at beginning of period			80	1,449
Additional liability recorded			169	5,003
Non-cash disposal				0
Cash payments			(208)	(6,107)
Balance at end of period	41	345	41	345
Current restructuring liabilities	41	345	41	345
Non-current restructuring liabilities	0	0	0	0
Consolidation of excess facilities
Activity and balance of the restructuring liability accounts
Balance at beginning of period			1,936	3,600
Additional liability recorded			9	1,738
Non-cash disposal				(747)
Cash payments			(269)	(2,999)
Balance at end of period	1,676	1,592	1,676	1,592
Current restructuring liabilities	612	453	612	453
Non-current restructuring liabilities	$ 1,064	$ 1,139	$ 1,064	$ 1,139