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Additional Balance Sheet Information (Details Textual) (USD $)
 12 Months Ended
May 29, 2014
May 30, 2013
May 31, 2012
Amortization Of Intangible Assets $ 334,000 $ 334,000 $ 334,000
Sale Leaseback Transaction, Deferred Gain, Net 635,000    
Commitment Minimum Lease Payments 6,163,000    
Payments Obligation Reduced Amount 4,871,000    
Expect Period Of Payments Obligation 12 months    
Regulatory Noncurrent Asset, Amortization Period 40 years    
Allowance for Doubtful Accounts Receivable 1,423,000 1,324,000  
Furniture and Fixtures [Member]
      
Capital Leases, Balance Sheet, Assets by Major Class, Net 45,510,000    
Master Licensing Agreement [Member]
      
Finite-Lived Intangible Assets, Remaining Amortization Period 10 years    
Digital Systems [Member]
      
Finite-Lived Intangible Assets, Accumulated Amortization 12,259,000 7,441,000  
CDF2 Holdings [Member]
      
Master Licensing Agreement Term 10 years    
five succeeding fiscal years [Member]
      
Amortization Of Intangible Assets 334,000    
Off-Market Favorable Lease [Member]
      
Finite-Lived Intangible Assets, Accumulated Amortization 3,005,000 2,671,000  
Amortization of Leased Asset $ 13,353,000