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Goodwill And Intangible Assets (Schedule Of Estimated Future Amortization Of Intangible Assets) (Details) (USD $)
In Thousands, unless otherwise specified
Jan. 31, 2015
Nov. 01, 2014
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2015 (remaining nine months) $ 3,173us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear  
2016 3,875us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo  
2017 3,476us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree  
2018 3,139us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour  
2019 1,680us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive  
Thereafter 3,180us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive  
Total $ 18,523us-gaap_FiniteLivedIntangibleAssetsNet [1] $ 11,548us-gaap_FiniteLivedIntangibleAssetsNet [1]
[1] During the three months ended January 31, 2015, the Company purchased a perpetual, non-exclusive license to certain patents for $7.8 million.