Restructuring and Other Costs (Schedule of Restructuring Reserve) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 31, 2015
Restructuring
Restructuring and Related Cost, Caption that Includes Restructuring Charges	Restructuring and other related costs
Initial Period in which Effects are Expected to be Realized	Cash payments for facilities that are part of the Company’s lease loss reserve are expected to be paid over the respective lease terms through fiscal year 2021.
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	$ 5,156
Cash payments	(570)
Translation adjustment	(192)
Restructuring liabilities, Ending balance	4,394
Restructuring Reserve Ending Balance
Current restructuring liabilities	2,063
Non-current restructuring liabilities	2,331
Fiscal 2013 Fourth Quarter Restructuring Plan
Restructuring
Restructuring and Related Activities, Description	During the fiscal year ended October 26, 2013, and the first quarter of fiscal year 2014, the Company restructured certain business operations and reduced the Company’s operating expense structure. The restructuring plan was approved by the Company’s management and communicated to the Company’s employees in September 2013. The restructuring plan included a workforce reduction of approximately 250 employees, primarily in the engineering, sales, and marketing organizations, as well as the cancellation of certain nonrecurring engineering agreements and exits from certain leased facilities. The Company substantially completed the restructuring plan by the end of the first quarter of fiscal year 2014.
Restructuring and Related Activities, Authorized Approval	The restructuring plan was approved by the Company’s management and communicated to the Company’s employees in September 2013.
Restructuring Reserve, Adjustment Description	The Company reevaluates its estimates and assumptions on a quarterly basis and makes adjustments to the restructuring liabilities balance if necessary. During the three months ended January 31, 2015, there were no adjustments made to the restructuring liabilities balance, as there were no changes in its estimates or assumptions.
Restructuring and Related Activities, Initiation Date	Sep. 04, 2013
Restructuring and Related Cost, Number of Positions Eliminated, Inception to Date	250
Restructuring and Related Activities, Completion Date	Jan. 25, 2014
Prior Restructuring Plans
Restructuring
Restructuring and Related Activities, Description	Prior to fiscal year 2013, the Company also recorded charges related to estimated facilities lease losses, net of expected sublease income, due to consolidation of real estate space as a result of acquisitions.
Severance and Benefits | Fiscal 2013 Fourth Quarter Restructuring Plan
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	171
Cash payments	0
Translation adjustment	0
Restructuring liabilities, Ending balance	171
Restructuring Reserve Ending Balance
Current restructuring liabilities	171
Non-current restructuring liabilities	0
Contract Terminations and Other | Fiscal 2013 Fourth Quarter Restructuring Plan
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	42
Cash payments	(42)
Translation adjustment	0
Restructuring liabilities, Ending balance	0
Restructuring Reserve Ending Balance
Current restructuring liabilities	0
Non-current restructuring liabilities	0
Lease Loss Reserve and Related Costs | Fiscal 2013 Fourth Quarter Restructuring Plan
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	3,949
Cash payments	(416)
Translation adjustment	(192)
Restructuring liabilities, Ending balance	3,341
Restructuring Reserve Ending Balance
Current restructuring liabilities	1,496
Non-current restructuring liabilities	1,845
Lease Loss Reserve and Related Costs | Prior Restructuring Plans
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	994
Cash payments	(112)
Translation adjustment	0
Restructuring liabilities, Ending balance	882
Restructuring Reserve Ending Balance
Current restructuring liabilities	396
Non-current restructuring liabilities	$ 486