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COMPENSATION PLANS (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 26, 2020
Sep. 28, 2019
Sep. 26, 2020
Sep. 28, 2019
Stock Incentive Plan 2017 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares reserved for issuance 750,000   750,000  
Shares available for future grants 352,000   352,000  
Restricted Stock Units (RSUs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period     3 years  
Restricted stock units issued     109,112  
Total compensation costs     $ 6.5  
Compensation expense recognized $ 1.7 $ 1.6 $ 4.4 $ 4.8