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Inventories
3 Months Ended
Mar. 29, 2025
Notes To Financial Statements [Abstract]  
Inventories Inventories
Inventories are composed of material, labor and overhead and are stated at the lower of cost or net realizable value. Costs for inventory have been determined using the first-in, first-out ("FIFO") method. The company estimates reserves for inventory obsolescence and shrinkage based on its judgment of future realization. Inventories at March 29, 2025 and December 28, 2024 are as follows (in thousands): 
 Mar 29, 2025Dec 28, 2024
Raw materials and parts$453,112 $453,273 
Work-in-process90,010 76,601 
Finished goods334,607 311,693 
 $877,729 $841,567