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Goodwill and other intangible assets - Goodwill, Indefinite-Lived Intangible Assets, and Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Amortizable intangible assets: |  |  |
Amortizable intangible assets, accumulated amortization | $ (168,452) |  | $ (118,958)
Amortizable intangible assets, net | 470,882 |  |
Intangible assets, gross | 2,730,066 |  | 1,645,035
Intangible assets, net | 2,561,614 |  | 1,526,077
Right-of-use assets for operating leases | 103,461 | $ 73,800 |
Retransmission agreements |  |  |
Amortizable intangible assets: |  |  |
Amortizable intangible assets, gross | 256,533 |  | 121,594
Amortizable intangible assets, accumulated amortization | (105,212) |  | (79,274)
Amortizable intangible assets, net | 151,321 |  | 42,320
Network affiliation agreements |  |  |
Amortizable intangible assets: |  |  |
Amortizable intangible assets, gross | 309,496 |  | 110,390
Amortizable intangible assets, accumulated amortization | (48,174) |  | (30,802)
Amortizable intangible assets, net | 261,322 |  | 79,588
Other |  |  |
Amortizable intangible assets: |  |  |
Amortizable intangible assets, gross | 73,305 |  | 28,865
Amortizable intangible assets, accumulated amortization | (15,066) |  | (8,882)
Amortizable intangible assets, net | 58,239 |  | 19,983
Television and radio station FCC broadcast licenses |  |  |
Indefinite-lived intangibles: |  |  |
Television station FCC licenses | 2,090,732 |  | $ 1,384,186
Adjustments for New Accounting Pronouncement |  |  |
Amortizable intangible assets: |  |  |
Favorable lease assets | 8,100 |  |
Favorable lease assets, accumulated amortization | 600 |  |
Right-of-use assets for operating leases | $ 7,500 |  |

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- Definition This element represents the identifiable intangible asset established upon acquisition based on a favorable difference between the terms of an acquired lease and the current market terms for that lease at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.15) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + 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 Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + 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) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit. + 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 (b) -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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