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Commitments and Contingencies (Tables)
6 Months Ended
Jan. 31, 2013
Restricted Cash and Cash Equivalents
   
January 31,
2013
   
July 31,
2012
 
   
(in thousands)
 
Restricted cash and cash equivalents-short-term
           
Letters of credit related
  $ 1,677     $ 1,430  
IDT Financial Services customer deposits
    21,700       11,206  
Total short-term
    23,377       12,636  
Restricted cash and cash equivalents-long-term
               
Letters of credit related
    4,767       2,763  
IDT Financial Services related
    6,704       6,703  
Total long-term
    11,471       9,466  
Total restricted cash and cash equivalents
  $ 34,848     $ 22,102