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STOCK-BASED COMPENSATION (Restricted Stock Activity) (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
Dec. 29, 2018
Restricted Stock        
Shares outstanding (in shares) 397,848      
Granted (in shares) 143,085      
Vested (in shares) (151,321) (168,471) (218,335)  
Forfeited (in shares) (15,604)      
Shares outstanding (in shares) 374,008 397,848    
Weighted-average grant-date fair value        
Weighted-average grant-date fair value outstanding (in dollars per share) $ 97.57 $ 85.44   $ 97.57
Granted (in dollars per share) 118.03      
Vested (in dollars per share) 84.56 74.00 $ 62.98  
Forfeited (in dollars per share) 97.83      
Weighted-average grant-date fair value outstanding (in dollars per share) $ 97.57 $ 85.44    
Weighted-average expense recognition period (in years) 2 years 3 months 24 days      
Performance-based restricted stock awards to the CEO        
Restricted Stock        
Granted (in shares) 45,625 60,952 53,070  
Weighted-average grant-date fair value        
Granted (in dollars per share) $ 120.25 $ 83.84 $ 90.66  
Time-based restricted stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost       $ 13.4
Restricted Stock        
Vested (in shares) (100,625) (114,703) (124,135)  
Weighted-average grant-date fair value        
Vested (in dollars per share) $ 85.64 $ 76.58 $ 65.80  
Weighted-average expense recognition period (in years) 2 years 5 months      
Restricted Stock Units (RSUs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost       16.0
Performance Shares [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost       $ 2.6
Restricted Stock        
Vested (in shares) (50,696)      
Shares outstanding (in shares) 153,922      
Weighted-average grant-date fair value        
Weighted-average grant-date fair value outstanding (in dollars per share) $ 96.47     $ 96.47
Vested (in dollars per share) 82.40      
Weighted-average grant-date fair value outstanding (in dollars per share) $ 96.47      
Weighted-average expense recognition period (in years) 1 year 7 months 28 days