Earnings (Loss) Per Share - Summary of Dilutive or Potentially Dilutive Instruments Outstanding (Details) - shares	6 Months Ended
Oct. 31, 2018	Oct. 31, 2017
Total potential incremental shares	350,663,891	18,331,157
Convertible Notes [Member]
Total potential incremental shares	240,356,018	243,284
Stock Warrants [Member]
Total potential incremental shares	2,493,333	333,333
Convertible Preferred Stock [Member]
Total potential incremental shares	107,814,540	17,754,540

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration