Restructuring Costs (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Apr. 30, 2012	Apr. 30, 2011	Oct. 31, 2011
Activity and balance of the restructuring liability accounts
Balance at beginning of period	$ 3,453	$ 7,968
Additional liability recorded	3,573	4,686
Cash payments	(3,701)	(3,706)
Balance at end of period	3,325	8,948
Current restructuring liabilities	1,230	4,374	664
Non-current restructuring liabilities	2,095	4,574
Workforce reduction [Member]
Activity and balance of the restructuring liability accounts
Balance at beginning of period	160	1,576
Additional liability recorded	3,573	4,686
Cash payments	(2,883)	(3,084)
Balance at end of period	850	3,178
Current restructuring liabilities	850	3,178
Non-current restructuring liabilities	0	0
Consolidation of excess facilities [Member]
Activity and balance of the restructuring liability accounts
Balance at beginning of period	3,293	6,392
Additional liability recorded	0	0
Cash payments	(818)	(622)
Balance at end of period	2,475	5,770
Current restructuring liabilities	380	1,196
Non-current restructuring liabilities	$ 2,095	$ 4,574

Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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Carrying amount as of the balance sheet date of known and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid after one year or beyond the next operating cycle, if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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- Definition

Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.

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