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Related Party Transactions - Additional Information (Details)	1 Months Ended				9 Months Ended
	Mar. 31, 2020 USD ($)	Feb. 29, 2020 shares	Jan. 31, 2019 ft²	Dec. 31, 2017 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)	Feb. 28, 2019 USD ($)	Jul. 31, 2018 USD ($)	May 31, 2018 USD ($)
Related Party Transaction [Line Items]
Accrued expenses and other current liabilities, related party amounts					$ 10,000	$ 0
Convertible notes issued							$ 200,000
Debt instrument interest rate							8.00%
Percentage of selling price per share that can convertible into equity securities sold							80.00%
Lease Agreement
Related Party Transaction [Line Items]
Prepaid expenses					100,000	0
Accrued expenses and other current liabilities, related party amounts						0
Lease Agreement | Maximum
Related Party Transaction [Line Items]
Accrued expenses and other current liabilities, related party amounts					100,000
Consulting Agreements
Related Party Transaction [Line Items]
Accounts payable					$ 20,000	$ 20,000
Marlinspike Group, LLC | 2020 Consulting Agreement
Related Party Transaction [Line Items]
Monthly fee for consultancy services	$ 20,000
Termination fee	$ 240,000
Marlinspike Group, LLC | Carlsbad, California | 2019 Consulting Agreement
Related Party Transaction [Line Items]
Area of office space | ft²			2,120
Aseem Z. Ansari, Ph.D. | Convertible Notes and Notes Payable
Related Party Transaction [Line Items]
Convertible notes issued								$ 300,000	$ 300,000
Debt instrument interest rate									8.00%
Percentage of selling price per share that can convertible into equity securities sold									80.00%
Aseem Z. Ansari, Ph.D. | Convertible Notes and Notes Payable | Series A Preferred Stock
Related Party Transaction [Line Items]
Convertible preferred stock converted | shares		171,025
Aseem Z. Ansari, Ph.D. | May Note
Related Party Transaction [Line Items]
Maturity description					on or after February 5, 2021, if not converted earlier
Aseem Z. Ansari, Ph.D. | July Note
Related Party Transaction [Line Items]
Maturity description					on or after February 5, 2021, if not converted earlier
Aseem Z. Ansari, Ph.D. | Consulting Agreements
Related Party Transaction [Line Items]
Monthly fee for services				$ 15,000

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