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Additional Balance Sheet Information (Details Textual) - USD ($)
 7 Months Ended 12 Months Ended
Dec. 31, 2015
Dec. 25, 2014
May. 28, 2015
May. 29, 2014
May. 30, 2013
Commitment Minimum Lease Payments $ 6,163,000        
Payments Obligation Reduced Amount $ 5,181,000        
Regulatory Asset, Amortization Period 40 years        
Amortization Of Intangible Assets $ 194,000 $ 194,000 $ 334,000 $ 334,000 $ 334,000
Allowance for Doubtful Accounts Receivable 259,000   245,000 1,423,000  
Furniture and Fixtures [Member]          
Capital Leases, Balance Sheet, Assets by Major Class, Net, Total 45,510,000   45,510,000 45,510,000  
Digital Systems [Member]          
Finite-Lived Intangible Assets, Accumulated Amortization $ 22,118,000   18,435,000 12,259,000  
Cdf 2 Holdings [Member]          
Master Licensing Agreement Term 10 years        
Off-Market Favorable Lease [Member]          
Amortization of Leased Asset $ 13,353,000        
Finite-Lived Intangible Assets, Accumulated Amortization $ 3,533,000   $ 3,339,000 $ 3,005,000