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OTHER INTANGIBLE ASSETS - Future Amortization and Accretion of Acquisition Related Intangible Assets and Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Future accretion of acquisition related intangible liabilities |  |
Net | $ (730) | $ (1,282)
Acquired Below-Market Leases |  |
Future accretion of acquisition related intangible liabilities |  |
2020 (Three months ending December 31, 2020) | (149) |
2021 | (347) |
2022 | (234) |
2023 | 0 |
2024 | 0 |
Thereafter | 0 |
Net | (730) |
Acquired Above-Market Leases |  |
Future amortization of acquisition related intangible assets |  |
2020 (Three months ending December 31, 2020) | 1 |
2021 | 5 |
2022 | 5 |
2023 | 6 |
2024 | 6 |
Thereafter | 1 |
Net | 24 | 32
Acquired In-Place Leases |  |
Future amortization of acquisition related intangible assets |  |
2020 (Three months ending December 31, 2020) | 302 |
2021 | 899 |
2022 | 663 |
2023 | 375 |
2024 | 375 |
Thereafter | 610 |
Net | $ 3,224 | $ 4,271

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