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INVENTORIES (Details) - USD ($)
$ in Thousands
Oct. 03, 2020
Dec. 28, 2019
Inventory Disclosure [Abstract]    
Components and parts $ 35,071 $ 35,626
Work-in-process 3,846 11,034
Finished goods 320,599 405,618
Inventories $ 359,516 $ 452,278