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Inventories
12 Months Ended
Dec. 25, 2020
Inventory, Net [Abstract]  
Inventories Inventories
Major components of inventories were as follows (in thousands):
20202019
Finished products and components$133,122 $132,128 
Products and components in various stages of completion83,791 86,957 
Raw materials and purchased components129,319 117,026 
Subtotal346,232 336,111 
Reduction to LIFO cost(60,528)(62,878)
Total$285,704 $273,233 

Inventories valued under the LIFO method were $150.1 million in 2020 and $140.3 million in 2019. All other inventory was valued on the FIFO method.
In 2020, decreases in material costs, including tariffs, offset the impact of increases in certain inventory quantities and drove the LIFO reserve requirement lower. The effect of the LIFO reserve change on net earnings was not significant.