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Receivables (Tables)
3 Months Ended
Aug. 31, 2013
Summary of Accounts Receivable

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

 

     August 31, 2013     May 31, 2013  
     (unaudited)        

Trade accounts receivable

   $ 145,962      $ 152,030   

Unbilled revenues

     26,795        25,516   

Allowance for doubtful accounts

     (5,742     (5,438
  

 

 

   

 

 

 

Total

   $ 167,015      $ 172,108