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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 9 Months Ended
Mar. 30, 2014
Mar. 31, 2013
Mar. 30, 2014
Mar. 31, 2013
Jun. 30, 2013
Schedule of Available-for-sale Securities [Line Items]          
Fair Value, Less than 12 Months $ 144,544   $ 144,544   $ 234,470
Unrealized Loss, Less than 12 Months (825)   (825)   (3,098)
Fair Value, Greater than 12 Months 1,979   1,979   0
Unrealized Loss, Greater than 12 Months (38)   (38)   0
Fair Value, Total 146,523   146,523   234,470
Unrealized Loss, Total (863)   (863)   (3,098)
Number of Securities with an Unrealized Loss, Less than 12 Months 71   71   123
Number of Securities with an Unrealized Loss, Greater than 12 Months 1   1   0
Number of Securities with an Unrealized Loss, Total 72   72   123
Gain on sale of investments, net 15 48 25 84  
Municipal Bonds [Member]
          
Schedule of Available-for-sale Securities [Line Items]          
Fair Value, Less than 12 Months 61,656   61,656   126,926
Unrealized Loss, Less than 12 Months (289)   (289)   (1,314)
Fair Value, Greater than 12 Months 0   0   0
Unrealized Loss, Greater than 12 Months 0   0   0
Fair Value, Total 61,656   61,656   126,926
Unrealized Loss, Total (289)   (289)   (1,314)
Corporate Bonds [Member]
          
Schedule of Available-for-sale Securities [Line Items]          
Fair Value, Less than 12 Months 82,888   82,888   102,010
Unrealized Loss, Less than 12 Months (536)   (536)   (1,765)
Fair Value, Greater than 12 Months 1,979   1,979   0
Unrealized Loss, Greater than 12 Months (38)   (38)   0
Fair Value, Total 84,867   84,867   102,010
Unrealized Loss, Total (574)   (574)   (1,765)
Non-U.S. Government Securities [Member]
          
Schedule of Available-for-sale Securities [Line Items]          
Fair Value, Less than 12 Months 0   0   5,534
Unrealized Loss, Less than 12 Months 0   0   (19)
Fair Value, Greater than 12 Months 0   0   0
Unrealized Loss, Greater than 12 Months 0   0   0
Fair Value, Total 0   0   5,534
Unrealized Loss, Total $ 0   $ 0   $ (19)