Financial Instruments, Short-term Investments (Details) (USD $) In Thousands, unless otherwise specified	Jun. 29, 2013	Jun. 30, 2012
Available-for-sale Securities [Abstract]
Amortized Cost Basis	$ 25,024	$ 75,007
Gross Unrealized Gains	36	319
Gross Unrealized Loss	0	0
Estimated Fair Value	25,060	75,326
Government agency securities [Member]
Available-for-sale Securities [Abstract]
Amortized Cost Basis	25,024	75,007
Gross Unrealized Gains	36	319
Gross Unrealized Loss	0	0
Estimated Fair Value	$ 25,060	$ 75,326