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INCOME TAXES - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 30, 2018
Dec. 31, 2017
Jan. 01, 2017
Dec. 25, 2015
Dec. 26, 2014
Operating Loss Carryforwards [Line Items]          
Effective income tax rate reconciliation, percent   28.50% 25.00% 26.10%  
Transition to the U.S. Tax Cuts and Job Act   $ 2,466 $ 0 $ 0  
Income tax expense (benefit) based on statutory rate   35.00% 35.00% 35.00%  
Discrete tax benefits   $ 1,400      
Expected benefit   1,495      
Unrecognized tax benefits   2,210 $ 2,242 $ 2,195 $ 2,039
Unrecognized tax benefits that would impact effective tax rate   1,700      
Unrecognized tax benefits, income tax penalties accrued   200      
Unrecognized tax benefits, interest on income taxes accrued   $ 900      
Scenario, Forecast [Member]          
Operating Loss Carryforwards [Line Items]          
Income tax expense (benefit) based on statutory rate 21.00%