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Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Non-amortizing intangibles | $ 76,673 | $ 76,597
Gross carrying amount | 28,935 | 28,913
Accumulated amortization and other | (27,729) | (27,239)
Total | 1,206 | 1,674
Total intangible assets, gross carrying amount | 108,852 | 108,754
Intangible assets, net | 81,123 | 81,515
Broadband |  |
Finite-Lived Intangible Assets [Line Items] |  |
Goodwill, gross | 3,244 | 3,244
Goodwill | 3,244 | 3,244
Subscriber relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 28,425 | 28,425
Accumulated amortization and other | (27,370) | (26,910)
Total | 1,055 | 1,515
Other intangibles |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 510 | 488
Accumulated amortization and other | (359) | (329)
Total | 151 | 159
Cable franchise rights |  |
Finite-Lived Intangible Assets [Line Items] |  |
Non-amortizing intangibles | 64,334 | 64,334
FCC spectrum licenses |  |
Finite-Lived Intangible Assets [Line Items] |  |
Non-amortizing intangibles | 12,122 | 12,122
Railroad crossing rights |  |
Finite-Lived Intangible Assets [Line Items] |  |
Non-amortizing intangibles | $ 217 | $ 141

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