Property and Equipment, Net - Summary of Property and Equipment (Parenthetical) (Detail) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Apr. 30, 2019 |
Apr. 30, 2018 |
Apr. 30, 2017 |
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| Property Plant And Equipment [Abstract] | |||
| Depreciation expense for capitalized software | $ 14,600,000 | $ 12,800,000 | $ 12,600,000 |
| Net book value of capitalized software | $ 65,800,000 | $ 46,400,000 | |
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- Definition Amount of expense for amortization of capitalized computer software costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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