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Intangible Assets Including Goodwill - Schedule of Expected Future Amortization Expense (Details) (USD $)
In Thousands, unless otherwise specified
May 03, 2015
Apr. 27, 2014
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2016 $ 8,413us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths  
2017 6,328us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo  
2018 4,218us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree  
2019 2,729us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour  
2020 1,251us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive  
2021 and beyond 349us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive  
Total $ 23,288us-gaap_FiniteLivedIntangibleAssetsNet $ 30,240us-gaap_FiniteLivedIntangibleAssetsNet