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FAIR VALUE MEASUREMENTS - Changes to Fair Value Measurement Level 3 (Details) - Liabilities - Fair Value, Recurring - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Series A Warrant Liabilities |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Remeasurement to fair value | $ 0 |  |  |
Series A Embedded Derivative Liabilities |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Remeasurement to fair value |  | $ (3,400) |  |
Series B Warrant Liabilities |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Remeasurement to fair value | (1,200) | (37,000) |  |
Level 3 |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Derivative liability, beginning balance |  |  | $ 101,615 | $ 126,117
Remeasurement to fair value |  |  | (6,716) | (34,590)
Exercise of warrants |  |  | (82,018) |
Conversion of redeemable convertible preferred stock |  |  | 12,881 |
Derivative liability, ending balance | 0 | 91,527 | 0 | 91,527
Level 3 | Series A Warrant Liabilities |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Derivative liability, beginning balance |  |  | 0 | 11,291
Remeasurement to fair value |  |  | 0 | (1,895)
Exercise of warrants |  |  | 0 |
Conversion of redeemable convertible preferred stock |  |  | 0 |
Derivative liability, ending balance | 0 | 9,396 | 0 | 9,396
Level 3 | Series A Embedded Derivative Liabilities |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Derivative liability, beginning balance |  |  | 16,835 | 18,448
Remeasurement to fair value |  |  | (3,954) | 3,941
Exercise of warrants |  |  | 0 |
Conversion of redeemable convertible preferred stock |  |  | 12,881 |
Derivative liability, ending balance | 0 | 22,389 | 0 | 22,389
Level 3 | Series B Warrant Liabilities |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Derivative liability, beginning balance |  |  | 84,780 | 96,378
Remeasurement to fair value |  |  | (2,762) | (36,636)
Exercise of warrants |  |  | (82,018) |
Conversion of redeemable convertible preferred stock |  |  | 0 |
Derivative liability, ending balance | $ 0 | $ 59,742 | $ 0 | $ 59,742

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- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Conversions + References No definition available. + Details
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