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Basis of Presentation and General Information (Components of Other Intangible Assets, Included In Other Assets) (Details) - USD ($) $ in Thousands | Dec. 27, 2019 | Dec. 28, 2018
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Finite Lived Intangible Assets Net [Abstract] |  |
Gross carrying amount | $ 27,269 | $ 27,269
Accumulated amortization | (25,274) | (24,238)
Foreign currency translation adjustment | 121 | 59
Intangible Assets, net | $ 2,116 | $ 3,090

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