Fair Value Measurements (Details) - USD ($) $ in Thousands		Jun. 27, 2015	Jun. 28, 2014
Level 1 [Member]
Fair value mesurement
Total	[1]		$ 527
Level 1 [Member] | US Treasury securities [Member]
Fair value mesurement
Total	[1]		$ 527
Level 1 [Member] | Repurchase Agreements [Member]
Fair value mesurement
Total	[1]
Level 1 [Member] | Time Deposits [Member]
Fair value mesurement
Total	[1]
Level 1 [Member] | National government and agency securities [Member]
Fair value mesurement
Total	[1]
Level 1 [Member] | State and municipal bond obligations [Member]
Fair value mesurement
Total	[1]
Level 1 [Member] | Corporate bonds and notes [Member]
Fair value mesurement
Total	[1]
Level 1 [Member] | Asset backed Securities [Member]
Fair value mesurement
Total	[1]
Level 1 [Member] | Mortgage backed securities [Member]
Fair value mesurement
Total	[1]
Level 2 [Member]
Fair value mesurement
Total	[1]	$ 110,887	$ 89,624
Level 2 [Member] | US Treasury securities [Member]
Fair value mesurement
Total	[1]
Level 2 [Member] | Repurchase Agreements [Member]
Fair value mesurement
Total	[1]	$ 463	$ 4,547
Level 2 [Member] | Time Deposits [Member]
Fair value mesurement
Total	[1]	42,277	17,693
Level 2 [Member] | National government and agency securities [Member]
Fair value mesurement
Total	[1]	4,673	5,055
Level 2 [Member] | State and municipal bond obligations [Member]
Fair value mesurement
Total	[1]	4,490	7,149
Level 2 [Member] | Corporate bonds and notes [Member]
Fair value mesurement
Total	[1]	46,857	42,781
Level 2 [Member] | Asset backed Securities [Member]
Fair value mesurement
Total	[1]	6,986	7,614
Level 2 [Member] | Mortgage backed securities [Member]
Fair value mesurement
Total	[1]	$ 5,141	$ 4,785
Level 3 [Member]
Fair value mesurement
Total	[1]
Level 3 [Member] | US Treasury securities [Member]
Fair value mesurement
Total	[1]
Level 3 [Member] | Repurchase Agreements [Member]
Fair value mesurement
Total	[1]
Level 3 [Member] | Time Deposits [Member]
Fair value mesurement
Total	[1]
Level 3 [Member] | National government and agency securities [Member]
Fair value mesurement
Total	[1]
Level 3 [Member] | State and municipal bond obligations [Member]
Fair value mesurement
Total	[1]
Level 3 [Member] | Corporate bonds and notes [Member]
Fair value mesurement
Total	[1]
Level 3 [Member] | Asset backed Securities [Member]
Fair value mesurement
Total	[1]
Level 3 [Member] | Mortgage backed securities [Member]
Fair value mesurement
Total	[1]
Fair Value [Member]
Fair value mesurement
Total	[1]	$ 110,887	$ 90,151
Fair Value [Member] | US Treasury securities [Member]
Fair value mesurement
Total	[1]		527
Fair Value [Member] | Repurchase Agreements [Member]
Fair value mesurement
Total	[1]	$ 463	4,547
Fair Value [Member] | Time Deposits [Member]
Fair value mesurement
Total	[1]	42,277	17,693
Fair Value [Member] | National government and agency securities [Member]
Fair value mesurement
Total	[1]	4,673	5,055
Fair Value [Member] | State and municipal bond obligations [Member]
Fair value mesurement
Total	[1]	4,490	7,149
Fair Value [Member] | Corporate bonds and notes [Member]
Fair value mesurement
Total	[1]	46,857	42,781
Fair Value [Member] | Asset backed Securities [Member]
Fair value mesurement
Total	[1]	6,986	7,614
Fair Value [Member] | Mortgage backed securities [Member]
Fair value mesurement
Total	[1]	$ 5,141	$ 4,785

[1] At June 27, 2015, $20.1 million of the time deposits and all of the repurchase agreements are included in cash and cash equivalents. At June 28, 2014, $4.0 million of the repurchase agreements are included in cash and cash equivalents.The balance of the investments at June 27, 2015 and June 28, 2014 are included in short-term investments in marketable securities in the consolidated balance sheets.