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Stock-Based Compensation - Weighted Average Fair Value (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Oct. 01, 2019
Oct. 02, 2018
Oct. 01, 2019
Oct. 02, 2018
Jan. 01, 2019
Stock Options          
Stock option activity, Shares          
Outstanding at beginning of year (in shares)     1,799    
Granted (in shares)     300    
Exercised (in shares)     (219)    
Forfeited or cancelled (in shares)     (17)    
Outstanding at end of year (in shares) 1,863   1,863   1,799
Exercisable at end of year (in shares) 1,028   1,028    
Weighted Average Exercise Price          
Outstanding at beginning of year (in dollars per share)     $ 45.03    
Granted (in dollars per share)     46.03    
Exercised (in dollars per share)     29.81    
Forfeited or cancelled (in dollars per share)     48.38    
Outstanding at end of year (in dollars per share) $ 46.95   46.95   $ 45.03
Exercisable at end of year (in dollars per share) $ 45.37   $ 45.37    
Weighted Average Remaining Contractual Term (In years)          
Weighted Average Remaining Contractual Term (In years)     4 years 4 months 24 days   4 years 1 month 6 days
Exercisable at end of year (In years)     2 years 10 months 24 days    
Aggregate Intrinsic Value          
Outstanding at beginning of year     $ 5,606    
Outstanding at end of year $ 1,993   1,993   $ 5,606
Exercisable at end of year 1,993   1,993    
Total intrinsic value of options exercised 100 $ 800 3,700 $ 5,500  
Unrecognized Stock-based Compensation Expense          
Total unrecognized stock-based compensation expenses related to unvested stock options, restricted shares and restricted share units $ 7,700   $ 7,700    
Expected weighted average period for recognition of compensation expense related to unvested stock option     3 years 3 months 18 days    
Restricted Shares and Restricted Share Units          
Restricted Shares and Restricted Share Units, Shares          
Outstanding at beginning of year (in shares)     1,702    
Granted (in shares)     453    
Vested (in shares)     (317)    
Forfeited (in shares)     (82)    
Outstanding at end of year (in shares) 1,756   1,756   1,702
Fair value of shares vested $ 1,900 $ 3,000 $ 14,300 $ 14,800  
Weighted Average Fair Value          
Outstanding at beginning of year (in dollars per share)     $ 48.08    
Granted (in dollars per share) $ 44.24 $ 50.15 45.80    
Vested (in dollars per share)     45.16    
Forfeited (in dollars per share)     48.05    
Outstanding at end of year (in dollars per share) $ 48.01   $ 48.01   $ 48.08
Unrecognized Stock-based Compensation Expense          
Total unrecognized stock-based compensation expenses related to unvested stock options, restricted shares and restricted share units $ 39,900   $ 39,900    
Expected weighted average period for recognition of compensation expense related to unvested stock option     3 years 7 months 6 days