MERGER AND ACQUISITION (Details) - USD ($) $ in Millions |
3 Months Ended | ||
|---|---|---|---|
May 06, 2020 |
Apr. 30, 2020 |
Jun. 30, 2020 |
|
| RDD Merger | |||
| Business Acquisition [Line Items] | |||
| Common stock consideration (in shares) | 37,860,510 | ||
| Stock options outstanding (in shares) | 1,014,173 | ||
| Value of common stock acquired | $ 26.6 | ||
| Liabilities assumed | 1.3 | ||
| Net assets received | $ 0.1 | ||
| Naia Acquisition | |||
| Business Acquisition [Line Items] | |||
| Common stock consideration (in shares) | 4,835,438 | ||
| Cash consideration | $ 2.1 | ||
| Pre-payment consideration for operating costs | 0.1 | ||
| Milestone payments | 80.4 | ||
| Value of common stock acquired | 2.2 | ||
| Liabilities assumed | $ 0.1 | ||
| RDD Merger and Naia Acquisition | |||
| Business Acquisition [Line Items] | |||
| Purchase of in-process research and development expense | $ 32.3 |