v3.10.0.1
STOCK-BASED COMPENSATION (Valuation Assumptions) (Details) - $ / shares
6 Months Ended
Jul. 01, 2018
Jul. 02, 2017
Stock-Based Compensation [Abstract]    
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value $ 3.73 $ 2.55
Fair Value Assumptions Expected Term 6 years 2 months 12 days 5 years
Expected dividend 0.00% 0.00%
Expected stock volatility 45.94% 60.47%
Risk-free interest rate 2.90% 2.20%