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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 |

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