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Leases (Tables)
12 Months Ended
Jan. 31, 2013
Leases [Abstract]  
Aggregate minimum lease payments for non-cancelable operating leases
         

For fiscal years ending:

       

2014

  $ 1,700  

2015

    1,169  

2016

    536  

2017

    428  

2018

    448  

Thereafter

    208