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Property and Equipment and Capitalized Internal-Use Software Development Costs - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Apr. 30, 2014
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Apr. 30, 2013
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Apr. 30, 2012
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| Property, Plant and Equipment [Line Items] | |||
| Depreciation and amortization | $ 3.3 | $ 2.8 | $ 2.1 |
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Capitalized internal-use software development costs
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| Property, Plant and Equipment [Line Items] | |||
| Capitalized internal-use software development costs, amortization | $ 4.6 | $ 2.5 | $ 1.0 |