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Stock-Based Compensation (Restricted Stock Awards) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 29, 2012
Jul. 01, 2011
Jun. 29, 2012
Jul. 01, 2011
Dividend Equivalent Units (DEUs) [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Payment Award Nonvested, Number 646   660  
Price Per Share $ 23.45   $ 22.84  
Restricted Stock Units (RSUs) [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation Expense $ 0.3 $ 0 $ 0.6 $ 0
Restricted Stock [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Payment Award Nonvested, Number     27,573 27,853
Price Per Share     $ 25.39 $ 25.14
Compensation Expense     $ 0.7 $ 0.7