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Share-Based Compensation - Option Activity and FMV (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Dec. 28, 2013
Options      
Outstanding at the beginning of the period (in shares) 1,154,945    
Granted (in shares) 250,835    
Exercised (in shares) (29,288) (20,931) (13,389)
Expired (in shares) (138,695)    
Forfeited (in shares) (31,019)    
Outstanding at the end of the period (in shares) 1,206,778 1,154,945  
Options exercisable at the end of the period (in shares) 701,514    
Vested or expected to vest at the end of the period (in shares) 1,190,974    
Weighted Average Exercise Price      
Outstanding at the beginning of the period (in dollars per share) $ 29.93    
Granted (in dollars per share) 21.74    
Exercised (in dollars per share) 20.57    
Expired (in shares) 46.22    
Forfeited (in dollars per share) 38.66    
Outstanding at the end of the period (in dollars per share) 26.36 $ 29.93  
Options exercisable at the end of the period (in dollars per share) 28.53    
Vested or expected to vest at the end of the period (in dollars per share) $ 26.40    
Weighted Average Remaining Contractual Term      
Outstanding at the end of the period 3 years 11 months 23 days    
Options exercisable at the end of the period 2 years 5 months 12 days    
Vested or expected to vest at the end of the period 3 years 11 months 16 days    
Aggregate Intrinsic Value      
Exercised (in dollars) $ 103 $ 100 $ 100
Outstanding at the end of the period (in dollars) 42    
Options exercisable at the end of the period (in dollars) 21    
Vested or expected to vest at the end of the period (in dollars) $ 41