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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2018
Fair Value Measurements [Abstract] |
Summary of Asset Impairment and Decommission Costs |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | For the year
﻿ |  | ended December 31,
﻿ |  | 2018 |  | 2017 |  | 2016
﻿ |  |  |  |  |  |  |  |
﻿Asset impairment (1) |  | $ | 14,350 |  | $ | 15,389 |  | $ | 19,217
﻿Write-off of carrying value of decommissioned towers |  |  | 10,795 |  |  | 16,861 |  |  | 12,967
﻿Gain on sale of fiber assets (2) |  |  | — |  |  | — |  |  | (8,919)
﻿Other (including third party decommission costs) |  |  | 1,989 |  |  | 4,447 |  |  | 6,977
﻿Total asset impairment and decommission costs |  | $ | 27,134 |  | $ | 36,697 |  | $ | 30,242
﻿ (1)Represents impairment charges resulting from the Company’s regular analysis of whether the future cash flows from certain towers are adequate to recover the carrying value of the investment in those towers. (2)Gain recognized on the sale of fiber assets acquired in the 2012 Mobilitie transaction.

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