Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) Segmant	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Product warranty limited warranty period	1 year
Advertising costs	$ 19,300	$ 41,900	$ 23,600
Number of operating segment | Segmant	1
Number of reportable segment | Segmant	1
Employee benefit plan, employer contributions	$ 0
ASU 2019-12
Summary Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, immaterial effect	true
ASU 2020-06
Summary Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, immaterial effect	true
ASU 2022-03
Summary Of Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, immaterial effect	true
Internal Use Software
Summary Of Significant Accounting Policies [Line Items]
Finite-lived intangible asset, useful life	3 years
Minimum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life of property and equipment	3 years
Finite-lived intangible asset, useful life	1 year
Maximum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life of property and equipment	5 years
Finite-lived intangible asset, useful life	4 years
Cash, FDIC insured amount	$ 250,000
Accounts Receivable | Credit Concentration Risk | Eargo Hearing Aids
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage		90.00%
Accounts Receivable | Credit Concentration Risk | FEHB
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage		93.00%