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Intangible Assets (Expected Future Amortization Expense) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 28, 2013
Mar. 31, 2013
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2014 $ 5,603  
2015 10,543  
2016 10,336  
2017 9,426  
2018 8,097  
Thereafter 32,501  
Definite-llved intangible assets, net carrying amount $ 76,506 $ 82,929