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Stock-Based Compensation - Schedule Of Outstanding Stock Options Currently Exercisable, Vested And Expected To Vest (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Share-Based Payment Arrangement, Noncash Expense [Abstract]    
Stock options outstanding 105,868 164,796
Stock options outstanding, Weighted Average Remaining Contractual Life (in Years) 5 years 7 months 13 days  
Stock options outstanding, Weighted Average Exercise Price per Share $ 35.31 $ 33.34
Stock options outstanding, Aggregate Intrinsic Value $ 13,321  
Exercisable, Number of Shares 99,067  
Exercisable, Weighted Average Remaining Contractual Life (in Years) 5 years 6 months 14 days  
Exercisable, Weighted Average Exercise Price per Share $ 35.47  
Exercisable, Aggregate Intrinsic Value $ 12,449  
Vested and expected to vest, Number of Shares 105,561  
Vested and expected to vest, Weighted Average Remaining Contractual Life (in Years) 5 years 7 months 9 days  
Vested and expected to vest, Weighted Average Exercise Price per Share $ 35.36  
Vested and expected to vest, Aggregate Intrinsic Value $ 13,277