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RECEIVABLES
 6 Months Ended
Nov. 30, 2012
RECEIVABLES

3. RECEIVABLES

A summary of accounts receivable as of November 30, 2012 and May 31, 2012 is as follows (in thousands):

 

     November 30, 2012     May 31, 2012  
     (unaudited)        

Trade accounts receivable

    $ 160,519      $ 141,469   

Unbilled revenues

      25,889        20,561   

Allowance for doubtful accounts

      (5,038 )      (4,405 ) 
  

 

 

    

 

 

  

Total

    $ 181,370      $ 157,625