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v3.21.1

NOTES PAYABLE - Term Loan Due to SPE Member (Details) - Notes payable - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Jun. 30, 2020 | May 31, 2020
Debt Instrument [Line Items] |  |  |  |  |
Repayment of debt | $ 22,240 | $ 25,796 |  |  |
Term Loan Due to SPE Member |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Face amount of debt |  |  | $ 13,300 |  |
Imputed interest |  |  | $ 1,200 |  |
Repayment of debt |  | $ 4,800 |  |  |
Fixed interest rate |  | 12.50% |  |  |
Balloon payment due at maturity |  | $ 8,700 |  | $ 3,000 | $ 5,900

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