10. SALE OF RESEARCH AND DEVELOPMENT ASSETS (Details Narrative) - Oncologie [Member] $ in Thousands	9 Months Ended
Jan. 31, 2019 USD ($)
Research and development assets [Member]
Proceeds from sale of assets	$ 8,000
r84 technology [Member]
Proceeds from sale of assets	$ 1,000

Amount of cash inflow from the sale of tangible or intangible assets used to produce goods or deliver services, classified as other.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

Name:	us-gaap_ProceedsFromSaleOfOtherProductiveAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration