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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 | $ 3,455 |
2022 | 3,290 |
2023 | 2,703 |
2024 | 1,662 |
2025 | 1,301 |
Thereafter | 3,914 |
Total undiscounted future minimum lease payments | 16,325 |
Less imputed interest | (1,437) |
Total discounted future minimum lease payments | 14,888 |
Finance Leases |  |
2021 | 80 |
2022 | 70 |
2023 | 58 |
2024 | 30 |
2025 | 0 |
Thereafter | 0 |
Total undiscounted future minimum lease payments | 238 |
Less imputed interest | (18) |
Total discounted future minimum lease payments | $ 220 |
Capital Lease Obligations |  |
2020 |  | $ 86
2021 |  | 80
2022 |  | 71
2023 |  | 58
2024 |  | 30
Thereafter |  | 0
Total minimum lease payments |  | 325
Less: imputed interest (4.1% to 15.9%) |  | (34)
Total capital lease obligations |  | 291
Less: current portion of capital lease obligations |  | (72)
Long-term capital lease obligations |  | 219
Operating Lease Obligations |  |
2020 |  | 1,878
2021 |  | 1,813
2022 |  | 1,817
2023 |  | 1,840
2024 |  | 1,353
Thereafter |  | 5,167
Total minimum lease payments |  | $ 13,868
Minimum |  |
Capital Lease Obligations |  |
Interest rate |  | 4.10%
Maximum |  |
Capital Lease Obligations |  |
Interest rate |  | 15.90%

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