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Employee Benefit Plans (Details Textual) (USD $)
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3 Months Ended | 12 Months Ended | 24 Months Ended | 12 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended | |||||||||||||||||||||||||||
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Jun. 24, 2012
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Jun. 26, 2011
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Dec. 20, 2009
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Dec. 25, 2011
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Dec. 26, 2010
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Dec. 20, 2009
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Dec. 25, 2011
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Dec. 25, 2011
Equity Securities [Member]
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Dec. 25, 2011
Debt Securities [Member]
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Jun. 24, 2012
Defined benefit plan [Member]
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Jun. 26, 2011
Defined benefit plan [Member]
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Jun. 24, 2012
Defined benefit plan [Member]
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Jun. 26, 2011
Defined benefit plan [Member]
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Dec. 25, 2011
Defined benefit plan [Member]
Employees
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Dec. 26, 2010
Defined benefit plan [Member]
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Dec. 20, 2009
Defined benefit plan [Member]
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Jun. 24, 2012
Post-Retirement Benefits Plans [Member]
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Jun. 26, 2011
Post-Retirement Benefits Plans [Member]
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Dec. 25, 2011
Post-Retirement Benefits Plans [Member]
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Dec. 26, 2010
Post-Retirement Benefits Plans [Member]
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Dec. 20, 2009
Post-Retirement Benefits Plans [Member]
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Mar. 24, 2012
Pension Plan Defined Benefit HSI [Member]
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Jun. 26, 2011
Pension Plan Defined Benefit HSI [Member]
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Jun. 24, 2012
Pension Plan Defined Benefit HSI [Member]
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Jun. 26, 2011
Pension Plan Defined Benefit HSI [Member]
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Dec. 25, 2011
Pension Plan Defined Benefit HSI [Member]
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Dec. 26, 2010
Pension Plan Defined Benefit HSI [Member]
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Dec. 20, 2009
Pension Plan Defined Benefit HSI [Member]
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Dec. 31, 2005
Pension Plan Defined Benefit HSI [Member]
Employees
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Dec. 25, 2010
Pension Plan Defined Benefit HSI [Member]
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Dec. 25, 2011
Post Retirement Benefit Plans HSI [Member]
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Dec. 26, 2010
Post Retirement Benefit Plans HSI [Member]
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Dec. 20, 2009
Post Retirement Benefit Plans HSI [Member]
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Dec. 31, 2005
Post Retirement Benefit Plans HSI [Member]
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Dec. 25, 2011
Restricted stock units [Member]
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Jun. 24, 2012
Restricted stock / vested shares [Member]
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Dec. 25, 2011
Restricted stock / vested shares [Member]
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Jun. 09, 2010
Restricted stock / vested shares [Member]
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Jun. 01, 2010
Restricted stock / vested shares [Member]
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Mar. 15, 2010
Restricted stock / vested shares [Member]
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Dec. 25, 2011
Health and Benefits Fund [Member]
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Dec. 26, 2010
Health and Benefits Fund [Member]
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| Employee Benefit Plans (Additional Textual) [Abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Historical employer contribution percentage | 100.00% | |||||||||||||||||||||||||||||||||||||||||
| Historical percentage of employee contribution for 100% matching contribution by employer | 6.00% | |||||||||||||||||||||||||||||||||||||||||
| Employer contribution percentage | 50.00% | |||||||||||||||||||||||||||||||||||||||||
| Percentage of Employee contribution for 100% matching contribution by employer | 6.00% | |||||||||||||||||||||||||||||||||||||||||
| Plan administered by company | Company also administers a 401(k) plan for certain union employees with no Company match | |||||||||||||||||||||||||||||||||||||||||
| Number of union employees sponsors benefit plan | 30 | 50 | ||||||||||||||||||||||||||||||||||||||||
| Recorded net periodic benefit costs | $ 100,000 | $ 100,000 | $ 200,000 | $ 200,000 | $ 400,000 | $ 400,000 | $ 860,000 | $ 879,000 | $ 800,000 | $ 200,000 | $ 200,000 | $ 700,000 | $ 500,000 | $ 800,000 | $ 100,000 | $ 100,000 | $ 200,000 | $ 200,000 | $ 200,000 | $ 200,000 | $ 300,000 | $ 400,000 | $ 400,000 | $ 400,000 | ||||||||||||||||||
| Underfunded pension plan | 900,000 | 1,300,000 | 5,200,000 | 5,100,000 | 2,800,000 | 2,500,000 | 4,900,000 | 5,700,000 | ||||||||||||||||||||||||||||||||||
| Minimum age of employee on the date of retirement | 55 years | 55 years | ||||||||||||||||||||||||||||||||||||||||
| Total year of Service and Age of Employee on the date of Retirement | 75 years | 75 years | ||||||||||||||||||||||||||||||||||||||||
| Minimum year of service to be eligible for post-retirement medical, dental and life insurance | 20 years | |||||||||||||||||||||||||||||||||||||||||
| Target investment | 65.00% | 35.00% | ||||||||||||||||||||||||||||||||||||||||
| Grant date fair value | $ 99.50 | $ 98.00 | $ 123.00 | |||||||||||||||||||||||||||||||||||||||
| Unrecognized compensation expense | 26,000 | 200,000 | 800,000 | |||||||||||||||||||||||||||||||||||||||
| Weighted-average period of unrecognized compensation expense | 5 months | 1 year | 10 months 24 days | |||||||||||||||||||||||||||||||||||||||
| Employee Benefit Plans (Textual) [Abstract] | ||||||||||||||||||||||||||||||||||||||||||
| Total Employee contributions cost | 1,000,000 | 1,100,000 | 2,100,000 | |||||||||||||||||||||||||||||||||||||||
| Percentage Increase in Assumed Health Care Cost Trend | 1.00% | |||||||||||||||||||||||||||||||||||||||||
| Service and interest cost increase | 200,000 | |||||||||||||||||||||||||||||||||||||||||
| Effect of one percentage point decrease on accumulated postretirement benefit obligation | 1,700,000 | |||||||||||||||||||||||||||||||||||||||||
| Percentage decrease in the assumed health care cost trend | 1.00% | |||||||||||||||||||||||||||||||||||||||||
| Service and interest cost decrease | 200,000 | |||||||||||||||||||||||||||||||||||||||||
| Decrease in benefit obligation | 1,300,000 | |||||||||||||||||||||||||||||||||||||||||
| Expected Company contributions, related to the pension plan | $ 800,000 | $ 800,000 | ||||||||||||||||||||||||||||||||||||||||