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Commitments and Contingencies - Additional Information (Details)					1 Months Ended		12 Months Ended
	Jan. 21, 2021 USD ($)	Jun. 05, 2020	Apr. 11, 2020 USD ($)	Sep. 27, 2017 USD ($)	Sep. 30, 2018 Patent	Aug. 31, 2016	Dec. 31, 2020
Commitments And Contingencies [Line Items]
Minimum percentage of loan proceeds used to cover payroll costs eligible for loan forgiven		60.00%	75.00%
Pending Litigation \| Piper Sandler & Co.
Commitments And Contingencies [Line Items]
Loss contingency payable fees				$ 1,100,000
Loss contingency closing date				Sep. 19, 2017
Financing aggregate consideration				$ 15,700,000
Reimbursement expenses				$ 100,000
Pending Litigation \| The Securities Class Action \| Subsequent Event
Commitments And Contingencies [Line Items]
Payment value of company insurance to plaintiffs	$ 500,000
PPP Loan
Commitments And Contingencies [Line Items]
Debt instrument, description							On June 5, 2020, the Payroll Protection Flexibility Act of 2020 was signed into law, adjusting certain terms of the loans issued under the PPP, including extending the initial deferral period from six to up to ten months, reducing from 75% to 60% the portion of loan proceeds required to be used to cover payroll costs, and allowing borrowers to elect a 24-week rather than an eight-week period related to employment and compensation provisions.
PPP Loan \| Other Current Liabilities
Commitments And Contingencies [Line Items]
CARES act of 2020 aid loan amount			$ 400,000
PPP Loan \| Other Non-current Liabilities
Commitments And Contingencies [Line Items]
CARES act of 2020 aid loan amount			200,000
PPP Loan \| JPMorgan Chase Bank, N.A
Commitments And Contingencies [Line Items]
CARES act of 2020 aid loan amount			$ 600,000
Promissory Note \| JPMorgan Chase Bank, N.A
Commitments And Contingencies [Line Items]
Debt instrument, term			2 years
Debt instrument, interest rate			1.00%
Assistance Publique – Hôpitaux de Paris (“AP-HP”) \| License Agreement
Commitments And Contingencies [Line Items]
Agreement entered date					2018-09	2016-08
Number of patent applications \| Patent					3