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Share-Based Compensation (Details 3) (USD $)
9 Months Ended
Oct. 27, 2012
Aggregated information regarding RSUs and RSAs granted  
Beginning balance, Number of Options   
Beginning balance, Weighted Average Grant Date Fair Value   
Granted, Number of Options 96,900
Granted, Weighted Average Grant Date Fair Value $ 8.10
Exercised, Number of Options   
Exercised, Weighted Average Grant Date Fair Value   
Expired or canceled, Number of Options   
Expired or canceled , Weighted Average Grant Date Fair Value   
Ending balance, Number of Options 96,900
Ending balance, Weighted Average Grant Date Fair Value $ 8.10