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DESCRIPTION OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Property and Equipment |  |
Property and equipment, net | $ 28 | $ 33
Capitalized Fees Paid to a Related Party |  |
Capitalized fees paid to a related party, useful life | 15 years |
Equipment, furniture and fixtures | Minimum |  |
Property and Equipment |  |
Estimated useful life | 5 years |
Equipment, furniture and fixtures | Maximum |  |
Property and Equipment |  |
Estimated useful life | 7 years |
Software and computer equipment |  |
Property and Equipment |  |
Estimated useful life | 3 years |

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