Restructuring And Other Costs (Schedule of Restructuring Reserve) (Details) $ in Thousands	12 Months Ended
	Oct. 31, 2015 USD ($) employess	Nov. 01, 2014 USD ($)
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	$ 5,156	$ 17,426
Restructuring and other charges	(678)	7,704
Cash payments	(1,880)	(18,032)
Other adjustments, net	(27)	(1,805)
Translation adjustment	(242)	137
Restructuring liabilities, Ending balance	2,329	5,156
Restructuring Reserve Ending Balance
Current restructuring liabilities	1,090
Non-current restructuring liabilities	$ 1,239
Initial Period in which Effects are Expected to be Realized	2021
Restructuring and Related Cost, Caption that Includes Restructuring Charges	Restructuring, goodwill impairment, and other related costs (benefits)
Fiscal 2013 Fourth Quarter Restructuring Plan
Restructuring Reserve Ending Balance
Restructuring and Related Activities, Initiation Date	Sep. 04, 2013
Restructuring and Related Cost, Number of Positions Eliminated, Inception to Date | employess	250
Restructuring and Related Activities, Expected Completion Date	Jan. 25, 2014
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 exit 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 fiscal year ended October 31, 2015, the Company reversed approximately $0.7 million of charges related to estimated facilities lease losses primarily due to favorable changes in expected sublease terms and other related assumptions.
Other Restructuring Plans [Member]
Restructuring Reserve Ending Balance
Restructuring and Related Activities, Description	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	15,216
Restructuring and other charges	0	18
Cash payments	0	(13,258)
Other adjustments, net	(27)	(1,805)
Translation adjustment	(34)	0
Restructuring liabilities, Ending balance	110	171
Restructuring Reserve Ending Balance
Current restructuring liabilities	110
Non-current restructuring liabilities	0
Contract Terminations and Other | Fiscal 2013 Fourth Quarter Restructuring Plan
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	42	416
Restructuring and other charges	0	0
Cash payments	(42)	(374)
Other adjustments, net	0	0
Translation adjustment	0	0
Restructuring liabilities, Ending balance	0	42
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	0
Restructuring and other charges	(519)	7,686
Cash payments	(1,411)	(3,600)
Other adjustments, net	0	0
Translation adjustment	(208)	137
Restructuring liabilities, Ending balance	1,811	3,949
Restructuring Reserve Ending Balance
Current restructuring liabilities	644
Non-current restructuring liabilities	1,167
Lease Loss Reserve and Related Costs | Other Restructuring Plans [Member]
Restructuring Reserve Rollforward
Restructuring liabilities, Beginning balance	994	1,794
Restructuring and other charges	(159)	0
Cash payments	(427)	(800)
Other adjustments, net	0	0
Translation adjustment	0	0
Restructuring liabilities, Ending balance	408	$ 994
Restructuring Reserve Ending Balance
Current restructuring liabilities	336
Non-current restructuring liabilities	$ 72