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v3.21.1

NOTES PAYABLE - Term Loan Due to Former Non-controlling Interest Holder (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2018 | May 31, 2020 | Jun. 30, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2021
Notes payable |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Repayment of debt, principal |  |  |  | $ 22,240 | $ 25,796 |
Debt discount |  |  |  | (571) |  | $ (425)
Balance outstanding, end of period |  |  |  | 38,295 |  |
Term Loan Due to SPE Member | Notes payable |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Fixed interest rate, annual |  |  |  |  | 12.50% |
Repayment of debt, principal |  |  |  |  | $ 4,800 |
Term Loan Due to Former Non-controlling Interest Holder |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Payments to acquire non-controlling interest | $ 8,100 |  |  |  |  |
Term Loan Due to Former Non-controlling Interest Holder | Notes payable |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Payments to acquire non-controlling interest |  |  | $ 8,100 |  |  |
Fixed interest rate, quarterly |  |  | 4.50% |  |  |
Fixed interest rate, annual | 18.00% |  | 18.00% |  |  |
Prepayment of debt, principal and interest |  | $ 1,500 |  |  |  |
Debt discount |  | (200) |  |  |  |
Balance outstanding, end of period |  | $ 1,000 |  | $ 5,800 | $ 7,200 |
Term Loan Due to Former Non-controlling Interest Holder | Shares reserved for warrants to purchase shares of common stock | Notes payable |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Warrants issued |  | 400,000 |  |  |  |

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