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Common Stock - Narrative (Details)	1 Months Ended	12 Months Ended
Common Stock - Narrative (Details)	Jan. 31, 2025 shares	Dec. 31, 2024 USD ($) award Vote grant shares	Dec. 31, 2023 USD ($) shares	Dec. 31, 2022 USD ($)	Jul. 31, 2015 shares	Sep. 30, 2013 shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares reserved for future awards		22,692,016	20,542,532
Number of inducement grants \| grant		3
2013 Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares authorized						1,057,692
Shares reserved for future awards					6,317,769
2013 Plan \| Stock Options \| Share-Based Payment Arrangement, Employee
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period		4 years
Expiration period		10 years
2013 Plan \| Stock Options \| Share-Based Payment Arrangement, Nonemployee \| Minimum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period		1 year
2013 Plan \| Stock Options \| Share-Based Payment Arrangement, Nonemployee \| Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period		4 years
2013 Plan \| Performance Shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of awards with performance vesting criteria \| award		1
2015 Plan \| Subsequent Event
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Increase to number of shares authorized	12,248,887
2015 Plan \| Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares reserved for future awards		2,923,076
Percent of shares outstanding reserved for future awards (as a percent)		4.00%
2015 Employee Stock Purchase Plan \| Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares reserved for future awards		769,230
Percent of shares outstanding reserved for future awards (as a percent)		1.00%
Common Stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Voting rights per share \| Vote		1
Dividends declare or paid \| $		$ 0	$ 0	$ 0
Common Stock \| 2013 Plan \| Stock Options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares reserved for future awards		114,108	115,942
Common Stock \| 2015 Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares reserved for future awards		9,673,426	9,100,247
Common Stock \| 2015 Plan \| Stock Options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares reserved for future awards		8,395,995	6,450,615
Common Stock \| 2015 Employee Stock Purchase Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares reserved for future awards		2,972,026	3,185,493