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Basis of Presentation and General Information (Components of Other Intangible Assets, Included In Other Assets) (Details) - USD ($) $ in Thousands | Jan. 01, 2021 | Dec. 27, 2019
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Finite Lived Intangible Assets Net [Abstract] |  |
Gross carrying amount | $ 27,269 | $ 27,269
Accumulated amortization | (26,251) | (25,274)
Foreign currency translation adjustment | 152 | 121
Intangible Assets, net | $ 1,170 | $ 2,116

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