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EQUITY COMPENSATION (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 28, 2019
Sep. 28, 2019
Dec. 28, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
PE and PEAR awards liability $ 456,000 $ 456,000  
VCIP | PE or PEARs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Payment period following vesting   3 years  
Total future compensation expense related to unvested awards yet to be recognized 2,796,000 $ 2,796,000  
Weighted-average remaining vesting period   4 years 3 months 18 days  
Stock-based compensation expense $ 156,000 $ 156,000  
PE and PEAR awards liability     $ 456,000
PE and PEAR awards liability from acquisition     $ 300,000
VCIP | Maximum | PE or PEARs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period   5 years  
VCIP | Minimum | PE or PEARs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period   4 years