v3.26.1
Net Income Per Share - Additional Information (Detail) - shares
3 Months Ended 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Stock Options [Member]        
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]        
Anti-dilutive securities excluded from earnings per share calculation 1,800,000 200,000 1,800,000 20,000.00