Balance Sheet Account Details (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012
Available-for-sale securities gross unrealized loss position
Estimated Fair Value	$ 241,480	$ 158,400
Gross Unrealized Losses	(474)	(203)
Debt securities in government sponsored entities [Member]
Available-for-sale securities gross unrealized loss position
Estimated Fair Value	73,362	28,176
Gross Unrealized Losses	(101)	(16)
Corporate debt securities [Member]
Available-for-sale securities gross unrealized loss position
Estimated Fair Value	168,118	130,224
Gross Unrealized Losses	$ (373)	$ (187)