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Employee Benefit Plans (Details Textual) (USD $)
 12 Months Ended
May 29, 2014
May 30, 2013
May 31, 2012
May 28, 2015
Forecast [Member]
May 29, 2014
Accumulated Defined Benefit Plans Adjustment [Member]
May 30, 2013
Accumulated Defined Benefit Plans Adjustment [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 1.00%          
Defined Contribution Plan, Employer Matching Contribution, Percent of Match 25.00%          
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent 6.00%          
Defined Contribution Plan, Cost Recognized $ 3,360,000 $ 3,369,000 $ 3,078,000      
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax (4,581,000) (3,836,000)        
Defined Benefit Plan, Accumulated Other Comprehensive Income Net Gains (Losses), after Tax (8,494,000) (7,273,000)     (5,079,000) (4,386,000)
Defined Benefit Plan, Accumulated Other Comprehensive Income Net Prior Service Cost (Credit), after Tax (834,000) (912,000)     (498,000) (550,000)
Defined Benefit Plan, Accumulated Benefit Obligation 23,658,000 21,936,000        
Defined Benefit Plan, Actuarial Gain (Loss) (1,567,000) 119,000        
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax (346,000)          
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Net of Tax (154,000) (167,000) (72,000)      
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Net of Tax       $ 326,000    
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 4.30% 4.40%        
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase 4.00% 4.00%        
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate 4.40% 4.25% 5.30%      
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase 4.00% 4.00% 5.00%