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SHARE-BASED COMPENSATION - Summary of Warrant Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 28, 2021
Dec. 27, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]    
Number of warrants, exercisable   25,862
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Weighted Average Exercise Price [Roll Forward]    
Exercisable warrants, weighted average exercise price (in dollars per share)   $ 16.80
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Intrinsic Value [Roll Forward]    
Options converted 600  
Warrant    
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]    
Number of warrants, outstanding, beginning balance (in shares) 25,862  
Number of warrants, outstanding, ending balance (in shares) 25,862 25,862
Number of warrants, exercisable 25,862  
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Weighted Average Exercise Price [Roll Forward]    
Outstanding warrants, weighted average exercise price, beginning balance (in dollars per share) $ 16.80  
Outstanding warrants, weighted average exercise price, ending balance (in dollars per share) 16.80 $ 16.80
Exercisable warrants, weighted average exercise price (in dollars per share) $ 16.80  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]    
Warrants outstanding, weighted average remaining contractual life 2 months 12 days 4 months 24 days
Exercisable warrants, weighted average remaining contractual life 2 months 12 days 4 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Intrinsic Value [Roll Forward]    
Outstanding warrants, intrinsic value, beginning balance $ 0  
Outstanding warrants, intrinsic value, ending balance 0 $ 0
Exercisable warrants, intrinsic price $ 0 $ 0