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DEFERRED COMPENSATION (Details)
$ in Thousands
12 Months Ended
Dec. 26, 2020
USD ($)
employee
Dec. 28, 2019
USD ($)
Deferred compensation    
Number of participants who chose a deferred settlement | employee 2  
Number of years for settlement 5 years  
Deferred compensation liability for the two participants who chose a deferred settlement $ 200 $ 300
Increase in investment in life insurance contracts   15,253
Investment in life insurance contracts 13,300 16,600
Liabilities related to Plan 36,600 33,100
Other Assets    
Deferred compensation    
Assets held by the Plan $ 600 $ 1,100