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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2018
Commitments and Contingencies [Abstract] |
Annual Minimum Lease Payments |
﻿ |  |  |  |  |  |
﻿ |  |  |  |  |  |
﻿For the year ended December 31, |  | Capital Leases |  | Operating Leases
﻿2019 |  | $ | 883 |  | $ | 237,730
﻿2020 |  |  | 482 |  |  | 239,208
﻿2021 |  |  | 303 |  |  | 241,090
﻿2022 |  |  | 86 |  |  | 242,320
﻿2023 |  |  | — |  |  | 243,476
﻿Total minimum lease payments |  |  | 1,754 |  |  |
﻿Less: amount representing interest |  |  | (83) |  |  |
﻿Present value of future payments |  |  | 1,671 |  |  |
﻿Less: current obligations |  |  | (860) |  |  |
﻿Long-term obligations |  | $ | 811 |  |  |
﻿
Annual Minimum Tower Lease Income |
﻿ |  |  |  |  |  |
﻿ |  |  |  |  |  |
﻿For the year ended December 31, |  |  |  |  | (in thousands)
﻿2019 |  |  |  |  | $ | 1,529,902
﻿2020 |  |  |  |  |  | 1,326,108
﻿2021 |  |  |  |  |  | 1,075,675
﻿2022 |  |  |  |  |  | 815,219
﻿2023 |  |  |  |  |  | 598,987
﻿

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