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RECEIVABLES (Tables)
 6 Months Ended
Nov. 30, 2014
Summary of Accounts Receivable

A summary of accounts receivable as of November 30, 2014 and May 31, 2014 is as follows (in thousands):

 

     November 30, 2014     May 31, 2014  
     (unaudited)        

Trade accounts receivable

    $ 202,621      $ 165,484   

Unbilled revenues

      19,172        14,901   

Allowance for doubtful accounts

      (4,786 )      (4,784 ) 
  

 

 

    

 

 

  

Total

    $ 217,007      $ 175,601