10. WARRANTS (Details Narrative)	3 Months Ended
Jul. 31, 2018 $ / shares shares
Warrants and Rights Note Disclosure [Abstract]
Warrants issued	0
Warrants exercised	0
Warrants outstanding	39,040
Warrant exercise price \| $ / shares	$ 17.29
Warrants exercisable expiration date	Aug. 30, 2018

Exercise price per share or per unit of warrants or rights outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant