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Equity Incentive Plans - Schedule of Valuation Assumptions (Details)
12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2022
Volatility Assumptions [Abstract]      
Average volatility of peer group 49.30% 41.54% 34.67%
Risk-free interest rate 4.65% 4.12% 0.81%
Dividend yield 0.00% 0.00% 0.00%
Expected term (in years) 2 years 10 months 13 days 2 years 10 months 13 days 2 years 10 months 13 days