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Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |  |
Non-amortizing intangibles | $ 78,314 |  | $ 64,475
Gross carrying amount | 488,492 |  | 496,776
Accumulated amortization and other | (252,659) |  | (195,222)
Total | 235,833 |  | 301,554
Total intangible assets, gross carrying amount | 566,806 |  | 561,251
Intangible assets, net | 314,147 | $ 352,201 | 366,029
Affiliate contract expansion |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross carrying amount | 455,305 |  | 455,305
Accumulated amortization and other | (226,712) |  | (167,830)
Total | 228,593 |  | 287,475
FCC Spectrum Licenses |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross carrying amount | 4,659 |  | 0
Accumulated amortization and other | (97) |  | 0
Total | 4,562 |  | 0
Favorable leases - Wireless |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross carrying amount | 0 |  | 15,743
Accumulated amortization and other | 0 |  | (1,919)
Total | 0 |  | 13,824
Acquired subscribers - Cable |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross carrying amount | 28,065 |  | 25,265
Accumulated amortization and other | (25,600) |  | (25,250)
Total | 2,465 |  | 15
Other intangibles |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross carrying amount | 463 |  | 463
Accumulated amortization and other | (250) |  | (223)
Total | 213 |  | 240
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 | 13,839 |  | 0
Railroad crossing rights |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Non-amortizing intangibles | $ 141 |  | $ 141

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