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Financial Instruments (Details 2) (USD $)
In Thousands, unless otherwise specified
Jul. 01, 2012
Jul. 03, 2011
Contractual maturities of fixed income securities    
Less than 1 year, Amortized Cost $ 19,981  
Due in 1 to 3 years, Amortized Cost 16,237  
Total, Amortized Cost 47,930 55,964
Less than 1 year, Fair Value 19,993  
Due in 1 to 3 years, Fair Value 16,225  
Total, Fair Value $ 36,218