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Note 7 - Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020
Gross carrying amount, amortized intangible assets | $ 857,418 | $ 375,418
Accumulated amortization, amortized intangible assets | 137,184 | 84,432
Net carrying amount | 720,234 | 290,986
Indefinite-Lived Intangible Assets | 2,097,212 | 987,212
Indefinite-Lived Intangible Assets | 2,097,212 | 987,212
Total intangible assets, net | 2,817,446 | 1,278,198
Franchise Rights [Member] |  |
Indefinite-Lived Intangible Assets | 2,089,712 | 979,712
Indefinite-Lived Intangible Assets | 2,089,712 | 979,712
Trade Names [Member] |  |
Indefinite-Lived Intangible Assets | 7,500 | 7,500
Indefinite-Lived Intangible Assets | $ 7,500 | 7,500
Customer Relationships [Member] |  |
Useful life (Year) | 17 years |
Gross carrying amount, amortized intangible assets | $ 841,700 | 369,700
Accumulated amortization, amortized intangible assets | 132,811 | 81,865
Net carrying amount | $ 708,889 | 287,835
Customer Relationships [Member] | Minimum [Member] |  |
Useful life (Year) | 13 years 6 months |
Trademarks and Trade Names [Member] |  |
Useful life (Year) | 4 years 2 months 12 days |
Gross carrying amount, amortized intangible assets | $ 14,300 | 4,300
Accumulated amortization, amortized intangible assets | 4,302 | 2,552
Net carrying amount | $ 9,998 | 1,748
Trademarks and Trade Names [Member] | Minimum [Member] |  |
Useful life (Year) | 2 years 8 months 12 days |
Wireless Spectrum Licenses [Member] |  |
Useful life (Year) | 15 years |
Gross carrying amount, amortized intangible assets | $ 1,418 | 1,418
Accumulated amortization, amortized intangible assets | 71 | 15
Net carrying amount | $ 1,347 | $ 1,403
Wireless Spectrum Licenses [Member] | Minimum [Member] |  |
Useful life (Year) | 10 years |

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 + Details
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