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Comprehensive Income (Details 1) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Apr. 02, 2011
Components of accumulated other comprehensive income    
Accumulated unrealized gains on available-for-sale securities, net of tax $ 8,916 $ 2,819
Accumulated unrealized gains (losses) on hedging transactions, net of tax (3,101) 5,223
Accumulated cumulative translation adjustment 1,449 2,475
Accumulated other comprehensive income $ 7,264 $ 10,517