Asset Retirement Obligation (Tables)
|6 Months Ended|
Oct. 31, 2018
|Asset Retirement Obligation Disclosure [Abstract]|
|Schedule of Asset Retirement Obligation||
The following table summarizes activity in the Company’s ARO:
Tabular disclosure of the carrying amount of a liability for asset retirement obligations.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef