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Stock-Based Compensation - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2025
Mar. 31, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Net proceeds from issuance of common stock under incentive compensation and employee purchase plans     $ 1,477 $ 1,434
Selling, General, and Administrative Expenses [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Stock-based compensation expense, approximately $ 5,300 $ 6,000 $ 10,800 $ 11,400