v2.4.0.6
Stock-Based Compensation (Summary Of RSU Activity) (Details) (Restricted Stock Units (RSUs) [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Dec. 30, 2012
Restricted Stock Units (RSUs) [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Balance, Nonvested, Number 78 3
RSUs, Nonvested, Weighted Average Grant Date Fair Value $ 31.32 $ 29.67
Weighted Average Remaining Contractual Terms, Nonvested 2 years 2 months 23 days  
Aggregate Intrinsic Value, Nonvested $ 2,717  
Grants in Period, RSUs 77  
Grants in Period, Weighted Average Grant Date Fair Value, RSUs $ 31.31  
Vested in Period, RSUs (2)  
Weighted Average Grant Date Fair Value, Vested in Period $ 31.94  
Canceled, RSUs 0  
Weighted Average Grant Date Fair Value, Canceled $ 0.00  
Vested And Expected To Vest, RSUs 63  
Weighted Average Grant Date Fair Value, Vested And Expected To Vest $ 31.32  
Weighted Average Remaining Contractual Term, Vested And Expected To Vest 2 years 0 months 7 days  
Aggregate Intrinsic Value, Vested And Expected To Vest $ 2,174