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Stock-Based Compensation (Summary Of The Activity For Non-Employees Director Stock Unit Awards) (Details) (Non-Employee Director Stock Unit Awards [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
9 Months Ended
Oct. 30, 2011
years
Non-Employee Director Stock Unit Awards [Member]
 
Number of Units  
Beginning balance 30
Stock units granted 18
Stock units vested (30)
Stock units forfeited   
Ending balance 18
Recorded liability  
Beginning balance $ 2,414
Change in liability 860
Ending balance 3,274
Weighted Averaged Grant Date Fair Value (per unit)  
Beginning balance $ 16.43
Stock units granted $ 27.60
Stock units vested $ 16.43
Ending balance $ 27.60
Aggregate Unrecognized Compensation  
Beginning balance 269
Ending balance $ 300
Period Over Which Expected to be Recognized (in years)  
Beginning balance 0.4
Ending balance 0.7