Financial Instruments, Short-term Investments (Details) (USD $)	3 Months Ended	12 Months Ended
	Sep. 27, 2014	Jun. 28, 2014
Available-for-sale Securities [Abstract]
Amortized Cost	$ 75,020,000	$ 49,853,000
Gross Unrealized Gains	86,000	100,000
Gross Unrealized Loss	(12,000)	0
Estimated Fair Value	75,094,000	49,953,000
Short-Term Investment [Member]
Schedule of Available-for-sale Securities [Line Items]
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	0	0
Government agency securities [Member]
Available-for-sale Securities [Abstract]
Amortized Cost	75,020,000	49,853,000
Gross Unrealized Gains	86,000	100,000
Gross Unrealized Loss	(12,000)	0
Estimated Fair Value	$ 75,094,000	$ 49,953,000