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Inventories
 9 Months Ended
Sep. 27, 2019
Inventory, Net [Abstract]  
Inventories Inventories

Major components of inventories were as follows (in thousands):
 
September 27,
2019
 
December 28,
2018
Finished products and components
$
142,184

 
$
142,535

Products and components in various stages of completion
88,345

 
83,768

Raw materials and purchased components
119,242

 
115,705

Subtotal
349,771

 
342,008

Reduction to LIFO cost
(61,183
)
 
(58,026
)
Total
$
288,588

 
$
283,982