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Estimated Useful Lives of Property Plant and Equipment (Detail)
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9 Months Ended |
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Jan. 31, 2014
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Computer Equipment
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| Property Plant And Equipment Estimated Useful Lifes [Line Items] | |
| Estimated useful life | 3 years |
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Furniture and Fixtures
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| Property Plant And Equipment Estimated Useful Lifes [Line Items] | |
| Estimated useful life | 5 years |
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Office Equipment
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| Property Plant And Equipment Estimated Useful Lifes [Line Items] | |
| Estimated useful life | 5 years |
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Software
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| Property Plant And Equipment Estimated Useful Lifes [Line Items] | |
| Estimated useful life | 3 years |
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Leasehold Improvements
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| Property Plant And Equipment Estimated Useful Lifes [Line Items] | |
| Estimated useful life | Shorter of estimated useful life or the lease term |