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STOCK-BASED COMPENSATION - Schedule of Weighted Average Assumptions (Details) - Employee Stock Purchase Plan
12 Months Ended
Jan. 01, 2017
Jan. 03, 2016
Dec. 28, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected life (months) 6 years 1 month 6 days 6 years 6 years
Risk-free interest rate 0.97% 0.21% 0.07%
Volatility 59.30% 55.00% 49.00%
Dividend yield 0.00% 0.00% 0.00%