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Goodwill and Other Intangible Assets | 12 Months Ended
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Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangible Assets | Goodwill and Other Intangible Assets The following is a summary of intangible assets at December 31, 2024 and 2023:
| Estimated Life (Years) |  | 2024 |  | 2023
|  | Gross Carrying Amount |  | Accumulated Amortization |  | Gross Carrying Amount |  | Accumulated Amortization
Amortizable Intangible Assets: |  |  |  |  |  |  |  |  |
Customer lists and contracts | 7 — 10 |  | $ | 732,098 |  |  | $ | 665,095 |  |  | $ | 731,156 |  |  | $ | 640,635 |
Non-competition agreements | 3 — 15 |  | 71,960 |  |  | 66,894 |  |  | 71,960 |  |  | 66,455 |
Site locations | 15 |  | 2,982,504 |  |  | 2,002,272 |  |  | 2,955,324 |  |  | 1,891,078 |
Other | 2 — 15 |  | 52,761 |  |  | 42,461 |  |  | 52,578 |  |  | 41,416 |
|  |  | $ | 3,839,323 |  |  | $ | 2,776,722 |  |  | $ | 3,811,018 |  |  | $ | 2,639,584 |
Unamortizable Intangible Assets: |  |  |  |  |  |  |  |  |
Goodwill |  |  | $ | 2,288,618 |  |  | $ | 253,536 |  |  | $ | 2,288,807 |  |  | $ | 253,536 |
The changes in the gross carrying amount of goodwill for the years ended December 31, 2024 and 2023 are as follows:
Balance as of December 31, 2022 | $ | 2,288,805 |
Purchase price adjustments and other | 2 |
Balance as of December 31, 2023 | $ | 2,288,807 |
Purchase price adjustments and other | (189) |
Balance as of December 31, 2024 | $ | 2,288,618 |
Amortization expense for the years ended December 31, 2024, 2023 and 2022 was $141,892, $140,033 and $134,256, respectively. The following is a summary of the estimated amortization expense for future years:
2025 | $ | 135,374 |
2026 | 127,362 |
2027 | 123,359 |
2028 | 116,832 |
2029 | 108,303 |
Thereafter | 451,371 |
Total | $ | 1,062,601 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
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