Stock-Based Compensation - Summary of Granted and Outstanding Shares (Details) - shares	Sep. 30, 2024	Sep. 30, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of options outstanding (in shares)	1,978,516	2,263,477
Total (in shares)	6,891,828
2013 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of options outstanding (in shares)	1,290,720
Total (in shares)	2,899,230
2021 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of options outstanding (in shares)	32,151
Total (in shares)	2,800,927
Inducement Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of options outstanding (in shares)	655,645
Total (in shares)	1,191,671
Restricted stock units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award (in shares)	4,913,312	4,241,640
Restricted stock units | 2013 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award (in shares)	1,608,510
Restricted stock units | 2021 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award (in shares)	2,768,776
Restricted stock units | Inducement Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based payment award (in shares)	536,026