Commitments and Contingencies - Summary of Company's Minimum Aggregate Rental Commitments Under all Non-cancelable Operating Leases (Details) - USD ($) $ in Thousands |
Dec. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Lessee, Lease, Description [Line Items] | ||
| 2021 | $ 1,301 | |
| 2022 | 1,233 | |
| 2023 | 1,224 | |
| 2024 | 1,239 | |
| 2025 | 1,237 | |
| Thereafter | 1,584 | |
| Total | 7,818 | |
| Less: imputed interest | (1,521) | |
| Total operating lease liabilities | 6,297 | $ 7,400 |
| Ground Leases | ||
| Lessee, Lease, Description [Line Items] | ||
| 2021 | 277 | |
| 2022 | 193 | |
| 2023 | 169 | |
| 2024 | 169 | |
| 2025 | 151 | |
| Thereafter | 391 | |
| Total | 1,350 | |
| Less: imputed interest | (272) | |
| Total operating lease liabilities | 1,078 | |
| Office Lease | ||
| Lessee, Lease, Description [Line Items] | ||
| 2021 | 1,024 | |
| 2022 | 1,040 | |
| 2023 | 1,055 | |
| 2024 | 1,070 | |
| 2025 | 1,086 | |
| Thereafter | 1,193 | |
| Total | 6,468 | |
| Less: imputed interest | (1,249) | |
| Total operating lease liabilities | $ 5,219 |