v3.22.2.2
Income Taxes - Summary of Effective Income Tax Rate Reconciliation (Details)
12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Income Tax Disclosure [Abstract]      
At U.S. federal statutory rate (21.00%) (21.00%) (21.00%)
State taxes, net of federal effect (8.60%) (7.00%) (7.00%)
Stock compensation 1.70% (1.30%) (13.30%)
Valuation allowance 28.40% 29.30% 43.30%
Other 1.70% 0.00% (2.00%)
Effective income tax rate 2.20% (0.00%) (0.00%)