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STOCK-BASED COMPENSATION - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Dec. 29, 2020
Dec. 31, 2020
Dec. 31, 2019
STOCK-BASED COMPENSATION      
Allocated Share-based Compensation Expense   $ 181 $ 81
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant   700  
Weighted average estimated fair value of stock options granted   $ 3.41 $ 3.14
CEO [Member]      
STOCK-BASED COMPENSATION      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 40    
Two Thousand Eighteen Equity Incentive Plan [Member]      
STOCK-BASED COMPENSATION      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized   680  
Employee Stock Option [Member]      
STOCK-BASED COMPENSATION      
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount   $ 515  
Employee Service Share-based Compensation, Non-vested Awards, Compensation Cost Not yet Recognized, Period for Recognition   2 years  
Restricted common shares      
STOCK-BASED COMPENSATION      
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount   $ 1,160  
Employee Service Share-based Compensation, Non-vested Awards, Compensation Cost Not yet Recognized, Period for Recognition   2 years 1 month 6 days  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period   117  
Restricted common shares | Leadership team      
STOCK-BASED COMPENSATION      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period   117