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Inventories (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Jan. 03, 2021
Dec. 29, 2019
Dec. 30, 2018
Inventories (Textual) [Abstract]      
Inventories at cost as per LIFO $ 29.2 $ 40.0  
Inventories at average cost or FIFO methods 324.8 361.2  
LIFO income $ 1.1 $ 1.6 $ 0.1