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SHARE-BASED COMPENSATION - Summary of Warrant Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Mar. 29, 2020
Sep. 27, 2020
Sep. 29, 2019
Dec. 29, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]        
Number of warrants, exercisable       64,482
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Weighted Average Exercise Price [Roll Forward]        
Forfeited, weighted average exercise price, (in dollars per share)   $ 11.85    
Exercisable warrants, weighted average exercise price (in dollars per share)       $ 13.84
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Intrinsic Value [Roll Forward]        
Options converted     38,614  
Warrant        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares issued in period     423  
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]        
Number of warrants, outstanding, beginning balance (in shares) 64,482 64,482    
Forfeited (in shares)   (38,620)    
Number of warrants, outstanding, ending balance (in shares)   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) $ 13.84 $ 13.84    
Outstanding warrants, weighted average exercise price, ending balance (in dollars per share)   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 9 months 18 days 8 months 12 days    
Exercisable warrants, weighted average remaining contractual life 9 months 18 days 8 months 12 days    
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Intrinsic Value [Roll Forward]        
Outstanding warrants, intrinsic value, beginning balance $ 473 $ 473    
Outstanding warrants, intrinsic value, ending balance   0    
Exercisable warrants, intrinsic price   $ 0   $ 473
Options converted     1,020  
Employee Stock Option        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares issued in period     16,694