Benefits (Details) (USD $)	12 Months Ended			3 Months Ended								12 Months Ended
	Jun. 30, 2012		Jun. 25, 2011	Sep. 29, 2007 EITF 06-4 [Member]	Jun. 30, 2012 Defined Benefit Postretirement Life Insurance [Member]	Jun. 25, 2011 Defined Benefit Postretirement Life Insurance [Member]	Jun. 30, 2012 Non-Pension Benefits [Member]	Jun. 30, 2012 Retirees and Beneficiaries [Member]	Jun. 25, 2011 Retirees and Beneficiaries [Member]	Jun. 30, 2012 Active Participants [Member]	Jun. 25, 2011 Active Participants [Member]	Jun. 30, 2012 Scenario, Forecast [Member]
Defined contribution plan 401(k)
Employer matching percentage of employee contributions up to 3% of employee eligible compensation	100.00%
Maximum percentage of employee eligible compensation with 100% matching contributions by employer	3.00%
Employer matching percentage of additional employee contributions up to 5% of employee eligible compensation	50.00%
Maximum percentage of employee eligible compensation with 50% matching contributions by employer	5.00%
Defined contribution expense	$ 6,800,000		$ 6,000,000
Postemployment benefits obligation			4,800,000
Accumulated Postretirement Benefit Obligation [APBO]:
Retirees and beneficiaries								(20,427,000)	(9,989,000)	1,780,000	0
Funded status at end of year	(22,207,000)		(9,989,000)
Actuarial loss	1,507,000		0
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit)	3,100,000		0
Amounts Recognized in Accumulated Other Comprehensive Income:
Net actuarial loss	8,603,000		7,484,000
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax	3,100,000		0
Amounts recognized in Accumulated Other Comprehensive Income	11,703,000		7,484,000
Net Periodic Postretirement Benefit Cost/(Income):
Interest cost	500,000											877,000
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0											356,000
Amortization of net actuarial loss	388,000	[1]										734,000	[1]
Total net periodic postretirement benefit cost	888,000											1,967,000
Employer contributions, current period	150,000
Estimated employer contributions in next fiscal year												581,000
Economic Assumptions:
Benefit obligation, discount rate			5.10%									4.00%
Medical trend
Description of direction and pattern of change for assumed medical trend rate	9% -5%		9.5% -5%
Defined Benefit Plan, Assumptions Used Calculating Unrecognized Gain Loss Amortization, Average Remaining Life Expectancy	8 years 8 months 12 days
Estimated future benefit payments
2012							581,000
2013							631,000
2014							682,000
2015							738,000
2016							799,000
Thereafter							18,776,000
Total							22,207,000
Tax benefit from cumulative reduction in retained earnings from adoption of ASC 715				0
Assets for plan benefits included in Other Assets					3,000,000	2,900,000
Obligations included in Other Liabilities					$ 4,600,000	$ 4,400,000

[1] Unrecognized losses are amortized over average remaining service period of active participants of 8.7 years at June 30, 2012.