Condensed Consolidated Statements of Operations (Parenthetical) - USD ($) |
3 Months Ended | |
|---|---|---|
Jul. 31, 2017 |
Jul. 31, 2016 |
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| Income Statement [Abstract] | ||
| Impairment expenses | $ 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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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