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Stock-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Stock-based compensation
Vesting of early exercised options (in shares)	0		1,676
Unvested early exercises of stock options	$ 0.0		$ 0.1
Future awards under the 2021 Employee Stock Purchase Plan
Stock-based compensation
Stock authorized for issuance (in shares)	1,503,857		1,128,095
Exercise of outstanding stock options
Stock-based compensation
Weighted-average grant-date fair value of stock options granted (in dollars per share)	$ 8.37	$ 9.43
Unrecognized compensation cost	$ 17.3
Unrecognized compensation cost, weighted-average period for recognition	2 years 6 months
Vesting of outstanding restricted stock units
Stock-based compensation
Unrecognized compensation cost	$ 33.6
Unrecognized compensation cost, weighted-average period for recognition	3 years 25 days
Performance Shares (PSUs)
Stock-based compensation
Unrecognized compensation cost	$ 6.5
Outstanding (in shares)	438,500		438,500
Vested (in shares)	0
Stock-based compensation expense	$ 0.0
2021 Plan
Stock-based compensation
Stock authorized for issuance (in shares)	8,389,903		7,230,834
2016 Stock Plan
Stock-based compensation
Stock authorized for issuance (in shares)	1,754,604		1,776,694
2025 Inducement Plan
Stock-based compensation
Stock authorized for issuance (in shares)	270,000

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