Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.

+ References+ Details

Changes in Goodwill (Detail) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013 Power Reviews	Apr. 30, 2013 Longboard Media, Inc
Goodwill [Line Items]
Balance, as of April 30, 2012
Increase in goodwill related to acquisitions			113,152	28,681
Balance, as of April 30, 2013, net	$ 141,833