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INTANGIBLE ASSETS AND GOODWILL (Goodwill) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 29, 2020
Jan. 03, 2021
Dec. 29, 2019
Changes in intangible assets and goodwill [abstract]      
Impairments $ (94,000) $ (93,989) $ 0
Goodwill      
Changes in intangible assets and goodwill [abstract]      
Balance, beginning of fiscal year $ 227,865 227,865 227,362
Impairments   (21,229) 0
Other   0 503
Balance, end of fiscal year   $ 206,636 $ 227,865