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LEASES - Maturities of operating and finance lease (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Maturities of operating lease liabilities |  |
2020 | $ 889 |
2021 | 905 |
2022 | 981 |
2023 | 964 |
2024 | 1,343 |
Thereafter | 442 |
Total minimum future lease payments | 5,524 |
Less interest | (769) |
Total operating lease liabilities | 4,755 | $ 4,908
Maturities of finance lease liabilities |  |
2020 | 4,670 |
2021 | 30 |
2022 | 15 |
2023 | 13 |
2024 | 8 |
Thereafter | 0 |
Total minimum future lease payments | 4,736 |
Less interest | (74) |
Total finance lease liabilities | $ 4,662 | $ 4,633

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