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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 6 Months Ended
Dec. 29, 2013
Dec. 30, 2012
Dec. 29, 2013
Dec. 30, 2012
Jun. 30, 2013
Schedule of Available-for-sale Securities [Line Items]          
Fair Value, Less than 12 Months $ 122,751   $ 122,751   $ 234,470
Unrealized Loss, Less than 12 Months (1,059)   (1,059)   (3,098)
Fair Value, Greater than 12 Months 2,967   2,967   0
Unrealized Loss, Greater than 12 Months (51)   (51)   0
Fair Value, Total 125,718   125,718   234,470
Unrealized Loss, Total (1,110)   (1,110)   (3,098)
Number of Securities with an Unrealized Loss, Less than 12 Months 61   61   123
Number of Securities with an Unrealized Loss, Greater than 12 Months 2   2   0
Number of Securities with an Unrealized Loss, Total 63   63   123
Gain on sale of investments, net 0 8 10 36  
Municipal Bonds [Member]
          
Schedule of Available-for-sale Securities [Line Items]          
Fair Value, Less than 12 Months 46,896   46,896   126,926
Unrealized Loss, Less than 12 Months (151)   (151)   (1,314)
Fair Value, Greater than 12 Months 0   0   0
Unrealized Loss, Greater than 12 Months 0   0   0
Fair Value, Total 46,896   46,896   126,926
Unrealized Loss, Total (151)   (151)   (1,314)
Corporate Bonds [Member]
          
Schedule of Available-for-sale Securities [Line Items]          
Fair Value, Less than 12 Months 73,821   73,821   102,010
Unrealized Loss, Less than 12 Months (906)   (906)   (1,765)
Fair Value, Greater than 12 Months 2,967   2,967   0
Unrealized Loss, Greater than 12 Months (51)   (51)   0
Fair Value, Total 76,788   76,788   102,010
Unrealized Loss, Total (957)   (957)   (1,765)
Non-U.S. Government Securities [Member]
          
Schedule of Available-for-sale Securities [Line Items]          
Fair Value, Less than 12 Months 2,034   2,034   5,534
Unrealized Loss, Less than 12 Months (2)   (2)   (19)
Fair Value, Greater than 12 Months 0   0   0
Unrealized Loss, Greater than 12 Months 0   0   0
Fair Value, Total 2,034   2,034   5,534
Unrealized Loss, Total $ (2)   $ (2)   $ (19)