2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($) $ in Thousands |
3 Months Ended | |||
|---|---|---|---|---|
Jul. 31, 2018 |
Jul. 31, 2017 |
Apr. 30, 2018 |
Apr. 30, 2017 |
|
| Revenue | $ 12,589 | $ 27,077 | ||
| Restricted cash | 1,150 | 1,150 | $ 1,150 | $ 1,150 |
| Asset impairment charges | 0 | $ 0 | ||
| Manufacturing Revenue [Member] | ||||
| Revenue | 10,300 | |||
| Manufacturing Revenue [Member] | Prior Period Contract [Member] | ||||
| Revenue | $ 6,962 | |||