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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