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Income Taxes - Additional Information (Detail) - USD ($) | 12 Months Ended |
--- | --- | ---
Apr. 30, 2016 | Apr. 30, 2015
Income Tax Disclosure [Abstract] |  |
State tax credit carry forward | $ 224,000 |
State tax credit carry forwards, expiration beginning date | 2017 |
Valuation allowance |  | $ 10,000

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- Definition Tax credit carryforward expiration date state. + References No definition available. + Details
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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- References No definition available. + Details
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