Restructuring Costs (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 31, 2014	Jan. 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	115	5,030
Non-cash disposal		(619)
Cash payments	(213)	(4,665)
Balance at end of period	1,918	4,795
Current restructuring liabilities	679	3,981	674
Non-current restructuring liabilities	1,239	814
Workforce reduction [Member]
Activity and balance of the restructuring liability accounts
Balance at beginning of period	80	1,449
Additional liability recorded	106	3,943
Non-cash disposal		0
Cash payments	(136)	(3,228)
Balance at end of period	50	2,164
Current restructuring liabilities	50	2,164
Non-current restructuring liabilities	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	1,087
Non-cash disposal		(619)
Cash payments	(77)	(1,437)
Balance at end of period	1,868	2,631
Current restructuring liabilities	629	1,817
Non-current restructuring liabilities	$ 1,239	$ 814