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Stock-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended		6 Months Ended
	Sep. 30, 2025	Jul. 21, 2025	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance (in shares)			31,245,025		31,245,025		26,303,324
Stock options granted during period (in shares)					3,472,927
Weighted-average period (in years)					2 years 7 months 6 days
RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average period (in years)					2 years 8 months 12 days
Unrecognized stock-based compensation expense, excluding options			$ 5.4		$ 5.4
Restricted Stock Units RSU and Performance-Based RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted (in shares)					1,220,599
ESPP shares pending purchase
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance (in shares)			3,029,080		3,029,080		2,426,055
Accrued liabilities			$ 0.3		$ 0.3
Stock options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance (in shares)			9,524,119		9,524,119		9,192,963
Unrecognized stock based-compensation expenses			$ 11.5		$ 11.5
Employee \| Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant date fair value (in dollars per share)		$ 1.00
Unrecognized stock based-compensation expenses			$ 1.1		$ 1.1
Granted (in shares)		1,092,165
Employee \| Stock options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options granted during period (in shares)			0	29,400	3,472,927	3,365,288
Weighted average grant date fair value (in dollars per share)				$ 0.83	$ 1.36	$ 1.07
2021 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance (in shares)			9,524,119		9,524,119
ESPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock in connection with our ATM offering, net of offering expenses (in shares)	1,454,552