Commitments and Contingencies - Narrative (Details)	Apr. 08, 2021 patent	Apr. 09, 2020 patent	Sep. 05, 2018 patent	Jun. 30, 2021 inter_partes_review
Contingencies [Line Items]
Number of IPR requests denied | inter_partes_review				11
Number of IPR requests granted | inter_partes_review				7
Roku Lawsuit
Contingencies [Line Items]
Number of patents allegedly infringed upon			2
Roku Lawsuit | Pending litigation
Contingencies [Line Items]
Number of patents allegedly infringed upon			9
Number of patent families			4
Roku, TCL, Hisense, and Funai Patent Infringement - ITC Matter | Pending litigation
Contingencies [Line Items]
Number of patents allegedly infringed upon		5
TLC Hisense and Funai - ITC Matter | Pending litigation
Contingencies [Line Items]
Number of patents allegedly infringed upon		6
Roku- ITC Matter | Pending litigation
Contingencies [Line Items]
Number of patents allegedly infringed upon	2