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Leases - Future lease payments and sublease income (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Oct. 01, 2019
--- | --- | ---
Operating Lease costs |  |
2020 (remaining 9 months) | $ 574 |
2021 | 619 |
2022 | 520 |
2023 | 439 |
2024 | 240 |
Thereafter | 182 |
Total | 2,574 |
Less Imputed interest | (210) |
Total | 2,364 | $ 2,529
Finance lease costs |  |
2020 (remaining 9 months) | 273 |
2021 | 285 |
2022 | 51 |
2023 | 5 |
Total | 614 |
Less Imputed interest | (36) |
Total | 578 | $ 659
Sublease Payments received |  |
2020 (remaining 9 months) | 342 |
2021 | 356 |
2022 | 67 |
2023 | 12 |
2024 | 3 |
Total | 780 |
Less Imputed interest | (78) |
Total | $ 702 |

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