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Goodwill and Identified Intangible Assets - Summary of Changes to Carrying Value of Goodwill (Parenthetical) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Goodwill [Line Items] |  |  |
Goodwill | $ 847,029 | $ 385,784 | $ 385,784
Product Licensing Segment |  |  |
Goodwill [Line Items] |  |  |
Goodwill | 523,800 |  |
IP Licensing Segment |  |  |
Goodwill [Line Items] |  |  |
Goodwill | 323,200 |  |
TiVo Merger |  |  |
Goodwill [Line Items] |  |  |
Goodwill before measurement period adjustment | 461,100 |  |
Goodwill | $ 461,245 |  |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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- Definition Goodwill before measurement period adjustment. + References No definition available. + Details
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