Intangible Assets (Parenthetical) (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended |
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Apr. 30, 2011
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Schedule Of Intangible Assets [Line Items] | |
Intangible assets written-off | $ 880 |
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- Details
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- Definition
The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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