Restructuring Costs (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013	Apr. 30, 2012	Oct. 31, 2012
Activity and balance of the restructuring liability accounts
Balance at beginning of period			$ 5,049	$ 3,453
Additional liability recorded	1,509	1,851	6,539	3,573
Non-cash disposal			(735)
Cash payments			(7,886)	(3,701)
Balance at end of period	2,967	3,325	2,967	3,325
Current restructuring liabilities	2,238	1,230	2,238	1,230	3,516
Non-current restructuring liabilities	729	2,095	729	2,095
Workforce reduction [Member]
Activity and balance of the restructuring liability accounts
Balance at beginning of period			1,449	160
Additional liability recorded			4,916	3,573
Non-cash disposal			0
Cash payments			(5,733)	(2,883)
Balance at end of period	632	850	632	850
Current restructuring liabilities	632	850	632	850
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			3,600	3,293
Additional liability recorded			1,623	0
Non-cash disposal			(735)
Cash payments			(2,153)	(818)
Balance at end of period	2,335	2,475	2,335	2,475
Current restructuring liabilities	1,606	380	1,606	380
Non-current restructuring liabilities	$ 729	$ 2,095	$ 729	$ 2,095

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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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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- Definition

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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- Definition

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

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