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INVENTORY
12 Months Ended
Dec. 28, 2024
Inventory Disclosure [Abstract]  
INVENTORY INVENTORY
The composition of inventories is as follows:
December 28, 2024December 30, 2023
(in thousands)
Raw materials and supplies$43,041 $42,296 
Work in process51,785 59,727 
Finished products (1)
183,718 278,236 
Inventories$278,544 $380,259 
(1) This balance is net of an approximate $27 million write down as of December 28, 2024, associated with the carrying value of assets currently associated with the February 16, 2023, Cambodia-sourced non-human primate matter. See Note 18. Commitments and Contingencies
Inventory step up amortization expense incurred in fiscal year 2024 was $27.7 million.