1. DESCRIPTION OF COMPANY AND BASIS OF PRESENTATION (Details Narrative) - USD ($) $ in Thousands |
Jul. 31, 2018 |
Apr. 30, 2018 |
Jul. 31, 2017 |
Apr. 30, 2017 |
|---|---|---|---|---|
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | ||||
| Cash and cash equivalents | $ 37,484 | $ 42,265 | $ 37,256 | $ 46,799 |