Stock-Based Compensation - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value of common stock per share	$ 1.1		$ 1.1
Weighted-average grant-date fair value of options granted	$ 0.78	$ 3.57	$ 0.78	$ 3.9
Aggregate intrinsic value of stock options exercised	$ 0		$ 0	$ 200,000
Gross unrecognized stock-based compensation expense	8,300,000		$ 8,300,000
Unrecognized stock-based compensation expense weighted average amortized period			2 years
Number of restricted stock units granted			24,260
Restricted Stock Units ('RSU')
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized stock-based compensation expense weighted average amortized period			2 years 2 months 12 days
Gross unrecognized stock-based compensation expense	$ 3,800,000		$ 3,800,000
Issuance of restricted common units, net of tax withholdings, (Shares)			409,487
Restricted common units issued, gross			486,746
2022 Equity Inducement Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future issuance	428,859		428,859
2021 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future issuance	3,788,154		3,788,154
2019 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future issuance	132,705		132,705
2021 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future issuance	653,777		653,777
Number of shares issued	0	59,882	29,619	59,882
Apexigen Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future issuance	638,222		638,222