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Intangible Assets, Goodwill and Other (Tables) | 12 Months Ended
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Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets | The following is a summary of the Company's intangible assets.
| As of December 31, 2024 |  | As of December 31, 2023
| Gross Carrying Value |  | Accumulated Amortization |  | Net Book Value |  | Gross Carrying Value |  | Accumulated Amortization |  | Net Book Value
Site rental contracts and tenant relationships | $ | 7,879 |  |  | $ | (5,152) |  |  | $ | 2,727 |  |  | $ | 7,880 |  |  | $ | (4,758) |  |  | $ | 3,122 |
Other intangible assets | 113 |  |  | (59) |  |  | 54 |  |  | 113 |  |  | (56) |  |  | 57 |
Total | $ | 7,992 |  |  | $ | (5,211) |  |  | $ | 2,781 |  |  | $ | 7,993 |  |  | $ | (4,814) |  |  | $ | 3,179 |
Schedule of Estimated Annual Amortization Expense | The estimated annual amortization expense related to intangible assets for the years ending December 31, 2025 to 2029 is as follows:
| Years Ending December 31,
| 2025 |  | 2026 |  | 2027 |  | 2028 |  | 2029
Estimated annual amortization | $ | 375 |  |  | $ | 371 |  |  | $ | 288 |  |  | $ | 284 |  |  | $ | 284 |
Schedule of Goodwill | The change in the carrying value of goodwill for the years ended December 31, 2024 and 2023 is as follows:
| Towers |  | Fiber |  | Total
Balance as of December 31, 2023 | $ | 5,127 |  |  | $ | 4,958 |  |  | $ | 10,085 |
Impairment | — |  |  | (4,958) |  |  | (4,958) |
Balance as of December 31, 2024 | $ | 5,127 |  |  | $ | — |  |  | $ | 5,127 |

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