Annual report pursuant to Section 13 and 15(d)

Other Assets and Other Intangible Assets (Estimated Amortization of Intangible Assets for the Five Succeeding Fiscal Years)(Details)

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Other Assets and Other Intangible Assets (Estimated Amortization of Intangible Assets for the Five Succeeding Fiscal Years)(Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 25, 2016
Other Assets and Other Intangible Assets [Abstract]    
2018 $ 164  
2019 174  
2020 167  
2021 140  
2022 132  
Thereafter 1,305  
Total finite-lived intangible assets, net $ 2,082 $ 1,845