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Intangible Assets and Liabilities Estimated Future Annual Amortization Expense (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
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Intangible Assets [Abstract] |  |
2020 (amount remaining at June 30, 2020) | $ 26,345 |
2021 | 37,479 |
2022 | 27,138 |
2023 | 19,605 |
2024 | 15,469 |
Thereafter | 31,089 |
Total intangible assets subject to amortization (accretion) | 157,125 |
2020 (amount remaining at June 30, 2020) | (4,013) |
2021 | (1,963) |
2022 | (459) |
2023 | 0 |
2024 | 0 |
Thereafter | 0 |
Intangible liabilities, Net | (6,435) | $ (10,450)
2020 (amount remaining at June 30, 2020) | 22,332 |
2021 | 35,516 |
2022 | 26,679 |
2023 | 19,605 |
2024 | 15,469 |
Thereafter | 31,089 |
Total intangible assets (liabilities), net | $ 150,690 |

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