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NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 USD ($) Integer | Oct. 31, 2020 shares | Dec. 31, 2019 USD ($)
Lessor, Lease, Description [Line Items] |  |  |
Cash, cash equivalents and short-term investments | $ 95,000,000.0 |  |
Net assets | 102,600,000 |  |
Net cash used in operating activities | 35,000,000.0 |  |
Non-cash licensed technology impairment charge | 32,900,000 |  |
Goodwill | $ 32,466,000 |  | $ 32,466,000
Number of Operating Segments | Integer | 1 |  |
Pre-Funded Warrants [Member] |  |  |
Lessor, Lease, Description [Line Items] |  |  |
Warrants converted to shares | shares |  | 9,017,055 |
Equipment [Member] | Minimum [Member] |  |  |
Lessor, Lease, Description [Line Items] |  |  |
Property and equipment estimated useful lives | 3 years |  |
Equipment [Member] | Maximum [Member] |  |  |
Lessor, Lease, Description [Line Items] |  |  |
Property and equipment estimated useful lives | 7 years |  |
Leasehold Improvements [Member] | Minimum [Member] |  |  |
Lessor, Lease, Description [Line Items] |  |  |
Property and equipment estimated useful lives | 5 years |  |
Leasehold Improvements [Member] | Maximum [Member] |  |  |
Lessor, Lease, Description [Line Items] |  |  |
Property and equipment estimated useful lives | 10 years |  |

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