2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details - Contract manufacturing revenue ) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Jul. 31, 2018 |
Jul. 31, 2017 |
|
| Total contract manufacturing revenue | $ 12,589 | $ 27,077 |
| Manufacturing Revenue [Member] | ||
| Total contract manufacturing revenue | 10,300 | |
| Process Development Revenue [Member] | ||
| Total contract manufacturing revenue | $ 2,289 | |