Condensed Consolidated Statements of Operations (Parenthetical) - USD ($) |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Jul. 31, 2018 |
Jul. 31, 2017 |
Apr. 30, 2018 |
|
| Income Statement [Abstract] | |||
| Impairment expenses | $ 6,094,760 | $ 6,094,760 | |
| X | ||||||||||
- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
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