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STARBOARD INVESTMENT - Modifications to Stock and Warrants (Details) - USD ($) $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Jun. 04, 2020 | Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Series B warrants |  |  |  |
Offsetting Assets [Line Items] |  |  |  |
Warrants and rights outstanding |  | $ 73,100 |  | $ 96,400
Amortization of debt discount (premium) |  | 51 | $ 25 |
Series B warrants | Starboard |  |  |  |
Offsetting Assets [Line Items] |  |  |  |
Class of warrant or right, warrants subject to adjustments | 31,506,849 |  |  |
Class of warrant or right, outstanding | 68,493,151 |  |  |
Series A Redeemable Convertible Preferred Stock |  |  |  |
Offsetting Assets [Line Items] |  |  |  |
Proceeds from Issuance of Redeemable Preferred Stock | $ 35,000 |  |  |
Senior Secured Notes | Series B warrants | Merton |  |  |  |
Offsetting Assets [Line Items] |  |  |  |
Debt instrument, unamortized discount |  | 39 |  |
Senior Secured Notes | Series B warrants | Securities Purchase Agreement |  |  |  |
Offsetting Assets [Line Items] |  |  |  |
Warrants and rights outstanding |  | $ 1,300 |  |

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