Intangible Assets (Tables)

3 Months Ended

Jul. 31, 2013

Intangible Assets [Abstract]

Schedule of intangible assets

Intangible assets consisted of the following (in thousands):

	As of July 31,		As of April 30,
	2013	2012	2013
Intangible assets with indefinite lives:
Brands and trademarks	$153,419	$159,374	$153,747
Content and publishing rights	102,116	94,289	100,710
	$255,535	$253,663	$254,457
Net intangible assets with determinable lives:
Content and publishing rights	$518,747	$548,161	$529,934
Customer relationships	153,401	64,280	155,702
Brands and trademarks	13,347	12,813	13,806
Covenants not to compete	974	297	1,058
	$686,469	$625,551	$700,500
Total	$942,004	$879,214	$954,957