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Investments Investments (Summary of Investment Securities, Aggregated by Investment Type and Length of Time) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Sep. 29, 2013
Sep. 23, 2012
Jun. 30, 2013
Schedule of Available-for-sale Securities [Line Items]      
Fair Value, Less than 12 Months $ 180,967   $ 234,470
Unrealized Loss, Less than 12 Months (1,553)   (3,098)
Fair Value, Greater than 12 Months 0   0
Unrealized Loss, Greater than 12 Months 0   0
Fair Value, Total 180,967   234,470
Unrealized Loss, Total (1,553)   (3,098)
Number of Securities with an Unrealized Loss, Less than 12 Months 95   123
Number of Securities with an Unrealized Loss, Greater than 12 Months 0   0
Number of Securities with an Unrealized Loss, Total 95   123
Gain on sale of investments, net 10 28  
Municipal Bonds [Member]
      
Schedule of Available-for-sale Securities [Line Items]      
Fair Value, Less than 12 Months 91,293   126,926
Unrealized Loss, Less than 12 Months (502)   (1,314)
Fair Value, Greater than 12 Months 0   0
Unrealized Loss, Greater than 12 Months 0   0
Fair Value, Total 91,293   126,926
Unrealized Loss, Total (502)   (1,314)
Corporate Bonds [Member]
      
Schedule of Available-for-sale Securities [Line Items]      
Fair Value, Less than 12 Months 86,129   102,010
Unrealized Loss, Less than 12 Months (1,049)   (1,765)
Fair Value, Greater than 12 Months 0   0
Unrealized Loss, Greater than 12 Months 0   0
Fair Value, Total 86,129   102,010
Unrealized Loss, Total (1,049)   (1,765)
Non-U.S. Government Securities [Member]
      
Schedule of Available-for-sale Securities [Line Items]      
Fair Value, Less than 12 Months 3,545   5,534
Unrealized Loss, Less than 12 Months (2)   (19)
Fair Value, Greater than 12 Months 0   0
Unrealized Loss, Greater than 12 Months 0   0
Fair Value, Total 3,545   5,534
Unrealized Loss, Total $ (2)   $ (19)