Common Stock - Schedule of Shares Reserved for Future Issuance (Details)	Sep. 30, 2026 shares
Class of Stock [Line Items]
Total common shares reserved for future issuance (in shares)	64,957,291
Outstanding stock options
Class of Stock [Line Items]
Total common shares reserved for future issuance (in shares)	6,735,314
Outstanding stock options | 2021 Employee stock purchase plan
Class of Stock [Line Items]
Total common shares reserved for future issuance (in shares)	42,142
January 2024 Pre-Funded Warrants
Class of Stock [Line Items]
Total common shares reserved for future issuance (in shares)	858,015
Placement agent warrants
Class of Stock [Line Items]
Total common shares reserved for future issuance (in shares)	28,333
Shares reserved for the May 2025 Pre-funded warrants
Class of Stock [Line Items]
Total common shares reserved for future issuance (in shares)	4,619,867
Time based Stock Appreciation Rights
Class of Stock [Line Items]
Total common shares reserved for future issuance (in shares)	418,722
Shares reserved for SARs for exercised Series B warrants
Class of Stock [Line Items]
Total common shares reserved for future issuance (in shares)	100,059
Shares reserved for SARs for unexercised Series B warrants
Class of Stock [Line Items]
Total common shares reserved for future issuance (in shares)	280,783
May 2025 Series B Warrants
Class of Stock [Line Items]
Total common shares reserved for future issuance (in shares)	2,557,967
February 2026 Pre-Funded Warrants
Class of Stock [Line Items]
Total common shares reserved for future issuance (in shares)	22,294,900
February 2026 common warrants
Class of Stock [Line Items]
Total common shares reserved for future issuance (in shares)	22,294,900
Common stock options available for future grant: | 2017 Inducement Equity Incentive Plan
Class of Stock [Line Items]
Total common shares reserved for future issuance (in shares)	4,625
Common stock options available for future grant: | 2019 Omnibus Equity Incentive Plan
Class of Stock [Line Items]
Total common shares reserved for future issuance (in shares)	3,488,014
Common stock options available for future grant: | 2026 Inducement Equity Incentive Plan
Class of Stock [Line Items]
Total common shares reserved for future issuance (in shares)	1,233,650