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COMMITMENTS AND CONTINGENCIES Commitment Reserves (Details) - USD ($)
$ in Thousands
Sep. 26, 2020
Dec. 28, 2019
Sep. 28, 2019
Other Commitments [Line Items]      
Inventory Valuation Reserves $ 30,053 $ 9,283 $ 19,583
Inventory and fabric purchase commitments [Member]      
Other Commitments [Line Items]      
Inventory Valuation Reserves $ 15,400