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Stockholders' Equity - January 2023 Transactions with Mei Yun (Gina) Huang (Details) - January 2023 Transactions with Mei Yun (Gina) Huang - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 3 Months Ended
--- | --- | --- | --- | ---
Jan. 17, 2023 | Jan. 10, 2023 | Jan. 05, 2023 | Mar. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Sale of common stock (in shares) | 1,436,959 | 325,803 | 257,798 |
Sale of common stock (USD per share) | $ 0.5630 | $ 0.4604 | $ 0.3879 |
Proceeds from issuance of private placement | $ 809 |  |  | $ 250

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