Marketable Securities (Details 1) (USD $) In Thousands, unless otherwise specified	Jul. 01, 2012
Schedule of Amortized Cost and Estimated Fair Value of Debt Securities
Due in one year or less, Amortized Cost	$ 86,736
Due after one year through three years, Amortized Cost	208,834
Due after three years through five years, Amortized Cost	32,593
Due after five years, Amortized Cost	49,662
Total amortized cost of debt securities	377,825
Due in one year or less, Estimated Fair Value	86,765
Due after one year through three years, Estimated Fair Value	209,525
Due after three years through five years, Estimated Fair Value	32,745
Due after five years, Estimated Fair Value	50,255
Total estimated fair value of debt securities	$ 379,290

Available for sale securities debt maturities after five years amortized cost.

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