Receivables (Tables)

9 Months Ended

Feb. 28, 2013

Receivable

A summary of accounts receivable as of February 28, 2013 and May 31, 2012 is as follows (in thousands):

	February 28, 2013			May 31, 2012
	(unaudited)
Trade accounts receivable	$	139,757		$	141,469
Unbilled revenues		20,569			20,561
Allowance for doubtful accounts		(5,352	)		(4,405	)
Total	$	154,974		$	157,625