Summary of Significant Accounting Policies - Additional Information (Details)			1 Months Ended	12 Months Ended
	Jan. 01, 2021 USD ($)	Mar. 27, 2020 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2022 USD ($) Segment $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares
Summary Of Significant Accounting Policies [Line Items]
Proceeds from private offering of common stock				$ 13,490,000
Proceeds from capital contribution		$ 11,500,000
Asset impairment charges				$ 0	$ 0
Treasury stock repurchased | shares				0	0
Interest related to income taxes				$ 0
Penalties related to income taxes				$ 0
Number of operating segments | Segment				1
Right of use assets and corresponding lease liabilities	$ 300,000
Maximum
Summary Of Significant Accounting Policies [Line Items]
Sale of stock, consideration received			$ 113,000,000
Alzheimers Association
Summary Of Significant Accounting Policies [Line Items]
Grant revenue				$ 175,000	$ 0
Common Stock
Summary Of Significant Accounting Policies [Line Items]
Proceeds from private offering of common stock				$ 13,500,000
Open Market Sale Agreement | Common Stock
Summary Of Significant Accounting Policies [Line Items]
Aggregate number of shares issued and sell | shares				3,189,411	5,937,900
Shares issued, price per share | $ / shares				$ 1.12	$ 5.37
Proceeds from the sale of shares				$ 3,600,000	$ 31,900,000