v3.8.0.1
STOCK-BASED COMPENSATION (Valuation Assumptions) (Details) - $ / shares
3 Months Ended
Apr. 01, 2018
Apr. 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 $ 3.39 $ 2.93
Fair Value Assumptions Expected Term 6 years 1 month 6 days 5 years
Expected dividend 0.00% 0.00%
Expected stock volatility 46.66% 65.70%
Risk-free interest rate 2.70% 2.00%