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Inventories (Schedule Of Inventories) (Details) - USD ($)
$ in Thousands
Sep. 28, 2019
Dec. 29, 2018
Inventories [Abstract]    
Raw materials $ 22,332 $ 19,502
Work in progress 13,956 14,485
Finished goods 39,853 47,961
Inventories $ 76,141 $ 81,948