Commitments and Contingencies - Narrative (Details) ¥ in Millions										1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 12, 2024 USD ($)	Jul. 12, 2024 CNY (¥)	Feb. 08, 2024 USD ($)	Feb. 08, 2024 CNY (¥)	Jan. 23, 2024 CNY (¥)	May 10, 2021 customer patent	Apr. 08, 2021 patent	Apr. 09, 2020 patent	Sep. 05, 2018 patent	Dec. 31, 2022 patent	Sep. 30, 2024 USD ($) inter_partes_review	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) inter_partes_review patent	Sep. 30, 2023 USD ($)
Contingencies [Line Items]
Restructuring charges (reversal)											$ 104,000	$ 3,690,000	$ 2,723,000	$ 3,690,000
Total costs incurred inception to date											6,738,000		6,738,000
Expected cost remaining											$ 41,000		$ 41,000
Number of IPR requests denied | inter_partes_review											14		14
Number of IPR requests granted | inter_partes_review											12		12
Number of patents subject to inter partes review (IPR) | patent													2
Number of customers with filed complaint | customer						2
Loss contingency, deposit			$ 5,000,000	¥ 35	¥ 35
Loss contingency, refund	$ 1,400,000	¥ 10
Roku Lawsuit
Contingencies [Line Items]
Number of patents allegedly infringed upon | inter_partes_review													2
Pending litigation | Roku Lawsuit
Contingencies [Line Items]
Number of patents allegedly infringed upon | patent									9
Number of patent families | patent									4
Pending litigation | Roku, TCL, Hisense, and Funai Patent Infringement - ITC Matter
Contingencies [Line Items]
Number of patents allegedly infringed upon | patent								5
Pending litigation | TLC Hisense and Funai - ITC Matter
Contingencies [Line Items]
Number of patents allegedly infringed upon | patent								6
Pending litigation | Roku- ITC Matter
Contingencies [Line Items]
Number of patents allegedly infringed upon | patent							2			2
Number of patents not infringed | patent						1
Severance Expense
Contingencies [Line Items]
Restructuring charges (reversal)													$ 1,356,000
Total costs incurred inception to date											$ 4,781,000		4,781,000
Expected cost remaining											0		0
Other Exit Expense
Contingencies [Line Items]
Restructuring charges (reversal)													1,367,000
Total costs incurred inception to date											1,957,000		1,957,000
Expected cost remaining											41,000		41,000
Asia
Contingencies [Line Items]
Total costs incurred inception to date											4,200,000		4,200,000
Asia | Severance Expense
Contingencies [Line Items]
Restructuring charges (reversal)											0	3,400,000	100,000	3,400,000
Asia | Other Exit Expense
Contingencies [Line Items]
Restructuring charges (reversal)											0	$ 300,000	100,000	$ 300,000
Mexico
Contingencies [Line Items]
Expected restructuring costs											2,600,000		2,600,000
Expected cost remaining											41,000		41,000
Mexico | Severance Expense
Contingencies [Line Items]
Restructuring charges (reversal)											(100,000)		1,300,000
Mexico | Other Exit Expense
Contingencies [Line Items]
Restructuring charges (reversal)											$ 200,000		$ 1,300,000