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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
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