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v3.23.2

Equity - Stock-Based Compensation plans (Details) | 6 Months Ended
--- | ---
Jun. 30, 2023 shares | Jun. 30, 2022 shares
Stock Based Compensation Plans |  |
Options outstanding (in shares) | 5,000 |
Options exercisable (in shares) | 5,000 |
Options expired and cancelled (in shares) | 5,000 | 5,000
Stock options granted (in shares) | 0 | 0
2015 Plan |  |
Stock Based Compensation Plans |  |
Ratio of shares subject to award granted | 1 |
2021 Plan |  |
Stock Based Compensation Plans |  |
Total shares reserved for issuance of common stock related to the conversion of preferred stock | 1,900,000 |

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