Financial Instruments (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended				3 Months Ended		3 Months Ended	9 Months Ended
	Mar. 31, 2012	Mar. 26, 2011	Mar. 31, 2012	Mar. 26, 2011	Mar. 31, 2012 Prices With Unobservable Inputs (Level 3) [Member]	Jun. 25, 2011 Prices With Unobservable Inputs (Level 3) [Member]	Mar. 26, 2011 Collateralized Debt Obligations [Member]	Sep. 25, 2010 Collateralized Debt Obligations [Member]	Mar. 31, 2012 Auction Rate Securities [Member]	Mar. 31, 2012 CanAm Care LLC [Member] Prices With Unobservable Inputs (Level 3) [Member]	Jan. 06, 2012 CanAm Care LLC [Member] Prices With Unobservable Inputs (Level 3) [Member]	Jan. 06, 2012 CanAm Care LLC [Member] Prices With Unobservable Inputs (Level 3) [Member] Maximum [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Collateralized debt obligations held							$ 0	$ 560
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax	0	0	933	(1,042)					(933)
Available-for-sale Securities, Fair Value Disclosure					6,570	7,503
Proceeds from sale of collateralized debt obligations							(560)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Investment Securities, Unobservable Inputs, Balance					6,570	7,503
Investment Securities, Unobservable Inputs, Balance					6,570	7,503
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period					2,900	0
Transfers in to Level 3										2,900
Balance at end of period					2,900	0
Business Acquisition, Contingent Consideration, Potential Cash Payment											2,000
Business Acquisition, Contingent Consideration, Additional Consideration												$ 5,000