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SHARE-BASED COMPENSATION - Summary of Stock Option and Restricted Stock Activity (Details) - Stock options and restricted stock - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 29, 2020
Dec. 30, 2018
Dec. 29, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Beginning number of shares, outstanding (in shares) 582,845    
Number of shares, outstanding (in shares) 582,845    
Ending number of shares, options exercisable 326,395   313,645
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Weighted Average Exercise Price [Roll Forward]      
Beginning balance of options outstanding (in dollars per share) $ 18.32    
Ending balance of options outstanding (in dollars per share) 18.32    
Options exercisable at end of period $ 16.45   $ 16.05
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Roll Forward]      
Options outstanding, weighted average remaining contractual term 7 years 3 months 18 days 7 years 6 months  
Optons exercisable, weighted average remaining contractual term 6 years 8 months 12 days 6 years 9 months 18 days  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value [Roll Forward]      
Beginning balance, intrinsic value $ 2,793    
Ending value, intrinsic value 241    
Options exercisable, aggregate intrinsic value $ 85   $ 1,991
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]      
Nonvested, number of shares 256,450   269,200
Nonvested options, weighted average grant date fair value $ 20.69   $ 20.96