Fair Value Measurements - Warrant Derivative Liability (Activity in Level 3) (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Apr. 30, 2018 |
Apr. 30, 2017 |
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| Fair Value Disclosures [Abstract] | ||
| Balance Begnning | $ 52,500 | |
| Initial valuation of warrant derivative liability | 52,500 | |
| Change in valuation of warrant derivative liability | ||
| Gain on extinguishment of warrant liability | (52,500) | |
| Balance Ending | $ 52,500 | |
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- Definition Gain on extinguishment of warrant liability. No definition available.
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- References No definition available.
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- Definition Amount of transfers of financial instrument classified as a liability into level 3 of the fair value hierarchy. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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