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Stock-Based Compensation (Narrative) (Details) - $ / shares
shares in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2016
Jan. 02, 2016
Sep. 28, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options granted (in shares) 0 312  
Stock options vesting period 3 years    
Weighted average per share fair value of the stock options granted (in dollars per share)   $ 11.74  
Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options expiration period 5 years    
Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options expiration period 7 years    
Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options granted (in shares) 2 58  
Weighted average per share fair value of the stock options granted (in dollars per share) $ 47.73 $ 59.74  
Performance Shares [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted average per share fair value of the stock options granted (in dollars per share) $ 47.73 $ 59.74  
2011 Stock Incentive Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Increase in shares issued (in shares) 1,500    
Shares issued (in shares) 3,800    
Shares available for grant (in shares) 2,091    
2012 Employee Stock Purchase Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares available for grant (in shares) 651    
Expiration date Dec. 31, 2021    
Officers And Employees [Member] | Performance Shares [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options granted (in shares)   21  
Directors [Member] | Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period     3 years
Stock option vesting description vest on the date of the next annual meeting after grant    
Key Employees [Member] | Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options vesting period 3 years    
Key Employees [Member] | Performance Shares [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock option vesting description based on attainment of return on invested capital performance targets at the end of one, two and three year performance periods