Leases - Expected Minimum Lease Payments (Details) - USD ($) $ in Thousands |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Leases | ||
| 2022 | $ 98 | |
| 2023 | 89 | |
| 2024 | 76 | |
| Future minimum lease payments | 263 | |
| Less: Interest | (28) | |
| Present value of operating lease liabilities | $ 235 | $ 330 |