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Receivables
6 Months Ended
Nov. 30, 2013
Receivables

3. RECEIVABLES

A summary of accounts receivable as of November 30, 2013 and May 31, 2013 is as follows (in thousands):

 

     November 30, 2013     May 31, 2013  
     (unaudited)        

Trade accounts receivable

   $ 164,751      $ 152,030   

Unbilled revenues

     24,976        25,516   

Allowance for doubtful accounts

     (5,141     (5,438
  

 

 

   

 

 

 

Total

   $ 184,586      $ 172,108