Commitments and Contingencies - Textual (Details) $ in Millions											3 Months Ended	6 Months Ended
	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