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Note 7 - Leases - Future Commitments Under Long-term Leases (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
2021, finance | $ 333 |
2021, operating | 529 |
2021, total | 862 |
2022, finance | 291 |
2022, operating | 501 |
2022, total | 792 |
2023, finance | 86 |
2023, operating | 301 |
2023, total | 387 |
2024, finance | 35 |
2024, operating | 149 |
2024, total | 184 |
2025, finance | 27 |
2025, operating | 27 |
2025, total | 54 |
Thereafter, finance | 420 |
Thereafter, operating |  |
Thereafter, total | 420 |
Total lease payments, finance | 1,192 |
Total lease payments, operating | 1,507 |
Total lease payments, total | 2,699 |
Less imputed interest, finance | 319 |
Less imputed interest, operating | 108 |
Less imputed interest, total | 427 |
Total, finance | 873 | $ 850
Total, operating | 1,399 | 1,466
Total, total | 2,272 |
Less: current portion of obligations under leases, finance | 297 | 295
Less: current portion of obligations under leases, operating | 473 | 513
Less: current portion of obligations under leases, total | 770 |
Long-term portion of obligations under leases, finance | 576 | 555
Long-term portion of obligations under leases, operating | 926 | $ 953
Long-term portion of obligations under leases, total | $ 1,502 |

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