Investments in Marketable Securities (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 26, 2015	Jun. 27, 2015
Available-for-Sale Securities
Amortized Cost	$ 79,084	$ 90,283
Unrealized Gains	201	268
Unrealized Losses	(327)	(247)
Net Unrealized Gains (Losses)	(126)	21
Fair Value	78,958	90,304
Time deposits [Member]
Available-for-Sale Securities
Amortized Cost	$ 19,264	$ 22,157
Unrealized Gains
Unrealized Losses
Net Unrealized Gains (Losses)
Fair Value	$ 19,264	$ 22,157
Repurchase agreements [Member]
Available-for-Sale Securities
Amortized Cost
Unrealized Gains
Unrealized Losses
Net Unrealized Gains (Losses)
Fair Value
National government and agency securities [Member]
Available-for-Sale Securities
Amortized Cost	$ 3,180	4,612
Unrealized Gains	$ 61	64
Unrealized Losses		(3)
Net Unrealized Gains (Losses)	$ 61	61
Fair Value	3,241	4,673
State and municipal bond obligations [Member]
Available-for-Sale Securities
Amortized Cost	5,201	4,488
Unrealized Gains	50	13
Unrealized Losses	(9)	(11)
Net Unrealized Gains (Losses)	41	2
Fair Value	5,242	4,490
Corporate bonds and notes [Member]
Available-for-Sale Securities
Amortized Cost	39,386	46,889
Unrealized Gains	76	168
Unrealized Losses	(274)	(200)
Net Unrealized Gains (Losses)	(198)	(32)
Fair Value	39,188	46,857
Asset backed securities [Member]
Available-for-Sale Securities
Amortized Cost	7,364	6,994
Unrealized Gains	12	12
Unrealized Losses	(27)	(20)
Net Unrealized Gains (Losses)	(15)	(8)
Fair Value	7,619	6,986
Mortgage backed securities [Member]
Available-for-Sale Securities
Amortized Cost	4,419	5,143
Unrealized Gains	2	11
Unrealized Losses	(17)	(13)
Net Unrealized Gains (Losses)	(15)	(2)
Fair Value	$ 4,404	$ 5,141