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REVENUE - Narrative (Details) - USD ($)
$ in Thousands
Jun. 24, 2020
Dec. 25, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Other long-term liabilities $ 15,130 $ 15,328
Other current liabilities 11,400 $ 19,499
Revenue, remaining performance obligation $ 15,794