Commitments and Contingencies (Details) $ in Thousands				1 Months Ended		3 Months Ended			9 Months Ended
	Jan. 30, 2019 lawsuit	Jun. 14, 2018 defendant	Dec. 08, 2017 defendant	May 31, 2018 USD ($)	Jan. 31, 2018 USD ($)	Apr. 04, 2020 USD ($)	Mar. 30, 2019 USD ($)	Sep. 30, 2017 USD ($)	Sep. 29, 2018 USD ($)	Dec. 31, 2019 USD ($)	Aug. 18, 2019
Loss Contingencies [Line Items]
Bad debt expense						$ 6,486	$ 32
Release of product return and rebate reserves									$ 12,400
Number of Lawsuits | lawsuit	7
Letter of Credit
Loss Contingencies [Line Items]
Outstanding letters of credit						24,800				$ 24,600
Purchase Commitment
Loss Contingencies [Line Items]
Remaining minimum amount committed						443,400
Purchase Commitment | Accrued liabilities
Loss Contingencies [Line Items]
Remaining minimum amount committed						12,900
Purchase Commitment to Third Party Hosting Provider
Loss Contingencies [Line Items]
Remaining minimum amount committed						171,300
Purchase Commitment Accrual
Loss Contingencies [Line Items]
Remaining minimum amount committed						$ 15,200
Aliphcom, Inc. dba Jawbone
Loss Contingencies [Line Items]
Number of defendants | defendant		6	6
Sleep Tracking
Loss Contingencies [Line Items]
Reduction in challenged fees, percent											90.00%
PurePulse Class Action Lawsuit
Loss Contingencies [Line Items]
Settlement amount award to other party				$ 33,300
Wynit Distribution | Customer Concentration Risk
Loss Contingencies [Line Items]
Unrecognized revenue, net								$ 8,100
Accounts receivable charge recorded								35,800
Unrecoverable inventory								5,500
Accounts receivable for shipments made in the quarter								30,300
Probable insurance proceeds								26,800
Insurance proceeds receivable, accounts receivable								22,700
Insurance proceeds receivable, inventory								4,100
Charges offset by insurance recorded								9,000
Bad debt expense								7,600
Cost of revenue								1,400
Proceeds from insurance settlement					$ 5,400			$ 21,400