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STOCK-BASED COMPENSATION (Details 2) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jul. 29, 2017
Jul. 30, 2016
Jul. 29, 2017
Jul. 30, 2016
Stock-based compensation        
Allocated Share-based Compensation Expense $ 6,821 $ 6,087 $ 14,480 $ 12,631
Vesting period (in years)     1 year 3 years
Cost of Sales [Member]        
Stock-based compensation        
Allocated Share-based Compensation Expense 1,000 900 $ 2,000 $ 1,500
Restricted Stock Units (RSUs) [Member]        
Stock-based compensation        
Allocated Share-based Compensation Expense 2,661 2,121 5,926 4,427
Performance Awards Member        
Stock-based compensation        
Allocated Share-based Compensation Expense $ 4,160 $ 3,966 $ 8,554 $ 8,204
Percentage of Target Shares paid out if final operating income below threshold (as a percent)     100.00%  
Unvested awards at the beginning of the period (in shares)     515  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period     161  
Vested (in shares)     (286)  
Forfeited (in shares)     (27)  
Unvested awards at the end of the period (in shares) 555   555  
Weighted Average Grant Date Fair Value        
Unvested awards at the beginning of the period (in dollars per share)     $ 68.11  
Granted (in shares)     114.40  
Vested (in dollars per share)     50.97  
Forfeited (in dollars per share)     81.66  
Unvested awards at the end of the period (in dollars per share) $ 83.76   $ 83.76  
Unrecognized costs and period of recognition        
Unrecognized stock-based compensation expense (in dollars) $ 38,500   $ 38,500  
Weighted average period for recognition of unrecognized stock-based compensation expense (in years)     2 years 12 days