Stock-Based Compensation Expense - Common stock reserved for future issuance (Details) - shares	Mar. 31, 2025	Dec. 31, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares of common stock reserved	9,031,290	7,574,662
Restricted Stock Units
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares of common stock reserved	816,486	585,458
Stock options issued and outstanding under the 2006, 2015 and 2021 plans
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares of common stock reserved	7,052,744	5,906,298
Shares Available For Future Issuance Under The 2006 ,2015 And 2021 Plans [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares of common stock reserved	642,465	563,311
The 2021 ESPP Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares of common stock reserved	519,595	519,595