Restructuring Costs (Details) (USD $) In Thousands	9 Months Ended
Jul. 31, 2011	Jul. 31, 2010	Oct. 31, 2010
Activity and balance of the restructuring liability accounts
Balance at October 31	$ 7,968	$ 9,605
Additional liability recorded	5,941	3,985
Adjustment to previous estimates	(751)
Cash payments	(7,523)	(4,574)
Balance at July 31	5,635	9,016
Current restructuring liabilities	2,692	3,021	2,784
Non-current restructuring liabilities	2,943	5,995
Workforce reduction [Member]
Activity and balance of the restructuring liability accounts
Balance at October 31	1,576	170
Additional liability recorded	5,941	3,985
Cash payments	(5,800)	(2,476)
Balance at July 31	1,717	1,679
Current restructuring liabilities	1,717	1,679
Non-current restructuring liabilities	0	0
Consolidation of excess facilities [Member]
Activity and balance of the restructuring liability accounts
Balance at October 31	6,392	9,435
Adjustment to previous estimates	(751)
Cash payments	(1,723)	(2,098)
Balance at July 31	3,918	7,337
Current restructuring liabilities	975	1,342
Non-current restructuring liabilities	$ 2,943	$ 5,995

Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

+ References+ Details

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.

+ References+ Details

- 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.

+ References+ Details

- Definition

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

+ References+ Details