| Goodwill |
The change in the Company's goodwill balance was as follows (dollars in thousands): | | | | | | | | | | | | | | | | | Goodwill | | Cumulative Impairment | | Balance at December 31, 2024 | | $ | 929,609 | | | $ | — | | | Impairment charge | | (88,783) | | | | | Balance at December 31, 2025 | | $ | 840,826 | | | $ | 88,783 | | | Impairment charge | | (71,715) | | | | | Balance at June 30, 2026 | | $ | 769,111 | | | $ | 160,498 | |
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| Schedule of Intangible Assets |
Intangible assets consisted of the following (dollars in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | June 30, 2026 | | December 31, 2025 | | | Useful Life Range (in years) | | Gross Carrying Amount | | Accumulated Amortization | | Net Carrying Amount | | Gross Carrying Amount | | Accumulated Amortization | | Net Carrying Amount | | Finite-Lived Intangible Assets | | | | | | | | | | | | | | | | Customer relationships | | 13.5 - 17 | | $ | 766,053 | | | $ | 440,696 | | | $ | 325,357 | | | $ | 785,203 | | | $ | 419,231 | | | $ | 365,972 | | Trademarks and trade names(1) | | 2 | | — | | | — | | | — | | | 8,389 | | | 8,385 | | | 4 | | | Wireless licenses | | 10 | | 4,794 | | | 1,651 | | | 3,143 | | | 4,794 | | | 1,411 | | | 3,383 | | | Total finite-lived intangible assets | | | | $ | 770,847 | | | $ | 442,347 | | | $ | 328,500 | | | $ | 798,386 | | | $ | 429,027 | | | $ | 369,359 | | | | | | | | | | | | | | | | | | Indefinite-Lived Intangible Assets | | | | | | | | | | | | | | | | Franchise agreements | | | | | | | | $ | 1,079,000 | | | | | | | $ | 1,605,000 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Total intangible assets, net | | | | | | | | $ | 1,407,500 | | | | | | | $ | 1,974,359 | |
(1)Balances related to fully amortized trademarks and trade names were removed from both the gross carrying amount and accumulated amortization as of June 30, 2026.
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| Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense |
The future amortization of existing finite-lived intangible assets as of June 30, 2026 was as follows (in thousands): | | | | | | | | | | Year Ending December 31, | | Amount | | 2026 (remaining six months) | | $ | 27,527 | | | 2027 | | 50,473 | | | 2028 | | 46,874 | | | 2029 | | 45,670 | | | 2030 | | 43,649 | | | Thereafter | | 114,307 | | | Total | | $ | 328,500 | |
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