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Fair Value of Financial Instruments - Rollforward (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2023
Notes and Warrants Offering Derivative |  |
Measurement at beginning of period | $ (217) | $ 1,575
Change in fair value | (157) | (1,448)
Derecognition of debt | (14) | (81)
Measurement at end of period | 46 | 46
Total |  |
Measurement at beginning of period | 1,411 | 4,892
Change in fair value | (73) | (3,487)
Derecognition of debt | (14) | (81)
Measurement at end of period | 1,324 | 1,324
Warrants |  |
Warrants |  |
Measurement at beginning of period | 722 | 2,052
Change in fair value | 20 | (1,310)
Measurement at end of period | 742 | 742
Additional Warrants |  |
Warrants |  |
Measurement at beginning of period | 472 | 1,265
Change in fair value | 64 | (729)
Measurement at end of period | $ 536 | $ 536

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