MERGER AND ACQUISITION - Narrative (Details) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
May 06, 2020 |
Apr. 30, 2020 |
Dec. 31, 2020 |
|
RDD Merger | |||
Business Acquisition [Line Items] | |||
Common stock consideration (in shares) | 37,860,510 | ||
Number of 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 | ||
Potential future 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 |