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Commitments and Contingencies - Textual (Details) $ in Millions |  |  |  |  |  |  |  |  |  |  | 3 Months Ended | 6 Months Ended |
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Aug. 13, 2021 Patent | Jun. 23, 2021 Claimfeature | Dec. 01, 2020 Plaintiff | Nov. 02, 2020 Patent | Sep. 29, 2020 Patent | Sep. 28, 2020 Patent | Aug. 21, 2020 Patent | Jun. 12, 2020 Patent | Jun. 11, 2020 Patent | Mar. 10, 2017 Patent | Apr. 02, 2022 USD ($) | Apr. 02, 2022 USD ($) Patent | Mar. 31, 2022 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Tariff refund | $ |  |  |  |  |  |  |  |  |  |  | $ 9.5 | $ 9.5 | $ 10.0
Implicit, LLC |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Loss contingency, patents allegedly infringed upon, number |  |  |  |  |  |  |  |  |  | 2 |  |  |
Alphabet Inc. ("Alphabet") and Google LLC ("Google") |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Gain contingency, patents found infringed upon | 5 |  |  |  |  |  |  |  |  |  |  |  |
Gain contingency, patents allegedly infringed upon, number |  |  |  |  | 5 | 5 |  |  |  |  |  |  |
Sonos, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Gain contingency, patents allegedly infringed upon, number |  |  |  |  |  |  |  | 2 |  |  |  |  |
Gain contingency, patents allegedly infringed upon, number of claim features scheduled for early disposition |  |  |  |  |  |  |  |  |  |  |  | 2 |
Loss contingency, patents allegedly infringed upon, number |  |  |  |  |  |  |  |  | 5 |  |  |  |
Loss contingency, patents found not infringed upon, number |  |  |  | 1 |  |  |  |  |  |  |  |  |
Gain contingency, patents found not infringed, number of claim features | Claimfeature |  | 2 |  |  |  |  |  |  |  |  |  |  |
Sonos, Inc. | Canada |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Gain contingency, patents allegedly infringed upon, number |  |  |  |  |  |  | 1 |  |  |  |  |  |
Sonos, Inc. | Europe and France |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Gain contingency, patents allegedly infringed upon, number |  |  |  |  |  |  | 2 |  |  |  |  |  |
Google Foreign Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Gain contingency, patent allegedly infringed upon, number of defendants | Plaintiff |  |  | 2 |  |  |  |  |  |  |  |  |  |
Government |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Income tax examination, refund | $ |  |  |  |  |  |  |  |  |  |  | $ 2.9 | $ 4.7 |

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