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Fair Value (Tables)
6 Months Ended
Jul. 28, 2012
Fair Value [Abstract]  
Fair value hierarchy for Company's financial assets
                                 
    Fair Value Measurements at July 28, 2012  
    Carrying
Amount
    Quoted Market
Prices in Active
Markets for
Identical Assets
(Level 1)
    Significant Other
Observable
Inputs (Level 2)
    Significant
Unobservable
Inputs

(Level 3)
 

Cash and cash equivalents

                               

Cash

  $ 39,835     $ 39,835     $ —       $ —    

Short Term Investments

  $ 17,000     $ 17,000     $ —       $ —    
   

 

 

   

 

 

   

 

 

   

 

 

 

Total

  $ 56,835     $ 56,835     $ —       $ —    
   

 

 

   

 

 

   

 

 

   

 

 

 
   
    Fair Value Measurements at July 30, 2011  
    Carrying
Amount
    Quoted Market
Prices in Active
Markets for
Identical Assets
(Level 1)
    Significant Other
Observable
Inputs (Level 2)
    Significant
Unobservable
Inputs

(Level 3)
 

Cash and cash Equivalents

                               

Cash

  $ 43,404     $ 43,404     $ —       $ —    
   

 

 

   

 

 

   

 

 

   

 

 

 

Total

  $ 43,404     $ 43,404     $ —       $ —