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Income Taxes - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Contingency [Line Items] |  |  |  |
Valuation allowance | $ 287,895 | $ 37,243 |  |
Valuation allowance change in amount | (250,700) |  |  |
Accumulated undistributed earnings generated by foreign subsidiaries | 205,700 |  |  |
Income tax receivable, noncurrent | 122,993 | 64,570 |  |
Long-term income tax payable | 94,397 | 76,767 |  |
Unrecognized tax benefits | 233,156 | 87,294 | $ 33,552 | $ 33,506
Unrecognized tax benefits that would impact the effective income tax rate | 100,400 | 82,900 |  |
Unrecognized tax benefits, period decrease | (5,800) |  |  |
Accrued interest and tax penalties related to unrecognized tax benefits | 2,500 | 1,200 |  |
South Korea and Other Business Factors |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Valuation allowance change in amount | (36,700) | (17,000) |  |
Income tax receivable, noncurrent | 123,000 | 65,200 |  |
Long-term income tax payable | 62,300 | $ 48,200 |  |
Federal |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Operating loss carryforwards | $ 509,200 |  |  |
Operating loss carryforwards, begin to expire year | 2021 |  |  |
Operating loss carryforwards, expiration end year | 2035 |  |  |
State |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Operating loss carryforwards | $ 1,133,100 |  |  |
Operating loss carryforwards, begin to expire year | 2021 |  |  |
Operating loss carryforwards, expiration end year | 2039 |  |  |
State | Research Tax Credit Carryforward |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Tax credit carryforward | $ 82,200 |  |  |
Foreign |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Tax credit carryforward | $ 128,100 |  |  |
Tax credit carryforward expiration start year | 2021 |  |  |
Tax credit carryforward expiration end year | 2030 |  |  |
Foreign | Research Tax Credit Carryforward |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Tax credit carryforward | $ 600 |  |  |
TiVo Merger |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Valuation allowance change in amount | (281,700) |  |  |
DTS Inc. & Subsidiaries And Ziptronix Inc. | Federal | Research Tax Credit Carryforward |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Tax credit carryforward | $ 82,900 |  |  |
Tax credit carryforward expiration start year | 2021 |  |  |
Tax credit carryforward expiration end year | 2040 |  |  |
Comcast |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Valuation allowance change in amount | $ 31,000 |  |  |

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