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Additional Balance Sheet Information (Details Texual) (USD $)
 12 Months Ended
May 30, 2013
May 31, 2012
May 26, 2011
Additional Balance Sheet Information [Line Items]      
Amortization Of Intangible Assets $ 334,000 $ 334,000 $ 334,000
Sale Leaseback Transaction, Deferred Gain, Net, Total   635,000  
Commitment Minimum Lease Payments 6,163,000    
Payments Obligation Reduced Amount 4,562,000    
Expect Period Of Payments Obligation 12 months    
Master licensing agreement [Member]
      
Additional Balance Sheet Information [Line Items]      
Finite-Lived Intangible Assets, Remaining Amortization Period   10 years  
Furniture and Fixtures [Member]
      
Additional Balance Sheet Information [Line Items]      
Capital Leases, Balance Sheet, Assets by Major Class, Net, Total 45,510,000    
Digital Systems [Member]
      
Additional Balance Sheet Information [Line Items]      
Regulatory Noncurrent Asset, Amortization Period 10 Years    
Finite-Lived Intangible Assets, Accumulated Amortization 7,441,000 2,933,000  
Capital Leases, Balance Sheet, Assets by Major Class, Net, Total   43,878,000  
Capital Leased Assets, Number of Units 642    
CDF2 Holdings [Member]
      
Additional Balance Sheet Information [Line Items]      
Master licensing agreement term 10 years    
five succeeding fiscal years [Member]
      
Additional Balance Sheet Information [Line Items]      
Amortization Of Intangible Assets 334,000    
Off-Market Favorable Lease [Member]
      
Additional Balance Sheet Information [Line Items]      
Amortization of Leased Asset 13,353,000    
Regulatory Noncurrent Asset, Amortization Period 40 Years    
Finite-Lived Intangible Assets, Accumulated Amortization $ 2,671,000 $ 2,337,000 $ 2,003,000