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Share-Based Compensation - Narrative (Details) $ / shares in Units, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 USD ($) offeringPeriod $ / shares shares | Dec. 31, 2021 $ / shares shares | Dec. 31, 2020 | Dec. 30, 2022 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares available for grant (in shares) | shares | 400,000 |  |  |
Granted (in dollars per share) | $ / shares | $ 1.83 | $ 4.73 |  |
Share price (in dollars per share) | $ / shares |  |  |  | $ 0.90
Weighted average remaining contract life | 7 years 6 months | 7 years 10 months 17 days | 8 years 5 months 1 day |
Granted (in shares) | shares | 2,015,000 | 1,212,000 |  |
Common Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares issued under employee stock purchase plan (in shares) | shares | 45,304 | 40,146 |  |
Restricted Stock Units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Granted (in shares) | shares | 192,000 | 0 |  |
Grant date fair value | $ | $ 26 |  |  |
Unrecognized compensation costs | $ | $ 261 |  |  |
Vesting period | 2 years 2 months 15 days |  |  |
Granted (in dollars per share) | $ / shares | $ 2.37 | $ 0 |  |
Restricted Stock Units | Key Employees |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period | 3 years |  |  |
Stock Options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period | 3 years |  |  |
Unrecognized compensation costs | $ | $ 3,433 |  |  |
Granted (in dollars per share) | $ / shares | $ 1.46 | $ 3.61 |  |
Expected dividend yield | 0.00% | 0.00% |  |
Weighted average recognition period | 1 year 10 months 2 days |  |  |
Term of award | 10 years |  |  |
Stock Options | Minimum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Granted (in dollars per share) | $ / shares | $ 0.71 | $ 3.76 |  |
Stock Options | Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Granted (in dollars per share) | $ / shares | $ 2.55 | $ 5.30 |  |
Stock Options | Key Employees |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period | 3 years |  |  |
Stock Options | Director |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Vesting period | 1 year |  |  |
Stock Options | Officer | Common Stock | 2022 Equity Inducement Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Granted (in shares) | shares | 100,000 |  |  |
Employee Stock Purchase Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of yearly offering periods | offeringPeriod | 2 |  |  |
Offering period term | 6 months |  |  |
Employee stock purchase plan, purchase price percentage | 85.00% |  |  |
Number of shares reserved for issuance (in shares) | shares | 250,000 |  |  |

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