Fair Value Measurements - Warrant Derivative Liability (Activity in Level 3) (Details) |
12 Months Ended |
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Apr. 30, 2018
USD ($)
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| Fair Value Disclosures [Abstract] | 听 |
| Balance Begnning | $ 52,500 |
| Gain on extinguishment of warrant liability | (52,500) |
| Balance Ending |
| X | ||||||||||
- Definition Gain on extinguishment of warrant liability. No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- 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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