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Leases - Schedule of Future Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Operating Leases |  |
2021 | $ 622 |
2022 | 329 |
2023 | 16 |
2024 | 1 |
2025 | 0 |
Total future undiscounted lease payments | 968 |
Less imputed interest | (52) |
Total lease obligations | 916 | $ 1,480
Restructured Leases |  |
2021 | 170 |
2022 | 0 |
2023 | 0 |
2024 | 0 |
2025 | 0 |
Total future undiscounted lease payments | 170 |
Less imputed interest | (2) |
Total lease obligations | 168 | 488
Restructured Leases Sublease Payments |  |
2021 | (136) |
2022 | 0 |
2023 | 0 |
2024 | 0 |
2025 | 0 |
Total future undiscounted lease payments | (136) |
Less imputed interest | 2 |
Total lease obligations | (134) |
Finance Lease |  |
2021 | 3 |
2022 | 1 |
2023 | 0 |
2024 | 0 |
2025 | 0 |
Total future undiscounted lease payments | 4 |
Less imputed interest | 0 |
Total lease obligations | $ 4 | $ 6

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