Asset Retirement Obligation (Tables) |
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||
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Apr. 30, 2019 | ||||||||||||||||||||||||||||||||||||||||||||||
| Asset Retirement Obligation Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Asset Retirement Obligation |
The following table summarizes activity in the Company’s ARO:
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Tabular disclosure of the carrying amount of a liability for asset retirement obligations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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