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FAIR VALUE MEASUREMENTS - Narrative (Details) | Dec. 31, 2021 | Dec. 31, 2020
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Equity Securities | Discount rate | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 0.03 |
Equity Securities | Expected term | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 3 |
Equity Securities | Price volatility | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 0.45 |
Series A warrants | Expected term | Black Scholes Model |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 5.79 | 6.79
Series A warrants | Price volatility | Black Scholes Model |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 0.30 | 0.29
Series A warrants | Risk free interest rate | Black Scholes Model |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 0.0133 | 0.0062
Series B warrants | Expected term | Scenario 1 | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 5.88 | 6.87
Series B warrants | Expected term | Scenario 2 | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 0.65 | 1.65
Series B warrants | Price volatility | Scenario 1 | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 0.30 | 0.29
Series B warrants | Price volatility | Scenario 2 | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 0.25 | 0.50
Series B warrants | Risk free interest rate | Scenario 1 | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 0.0134 | 0.0063
Series B warrants | Risk free interest rate | Scenario 2 | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 0.0025 | 0.0012
Series B warrants | Discount for lack of marketability | Scenario 1 | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input |  | 0.10
Series B warrants | Discount for lack of marketability | Scenario 2 | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input |  | 0.10
Embedded Derivative | Discount rate | Scenario 2 | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 0.096 |
Embedded Derivative | Expected term | Scenario 2 | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 5.87 | 6.87
Embedded Derivative | Price volatility | Scenario 2 | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 0.30 | 0.29
Embedded Derivative | Risk free interest rate | Scenario 2 | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 0.013 | 0.0062
Embedded Derivative | Expected dividend rate | Scenario 2 | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input | 0 | 0
Embedded Derivative | Credit spread | Scenario 2 | Monte Carlo Method |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Debt instrument, measurement input |  | 0.1925

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