v3.25.2
Net Income per Common Share Data- Basic and Diluted Earnings Per Share (Detail) - USD ($)
3 Months Ended 6 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Dec. 31, 2023
Mar. 31, 2025
Mar. 31, 2024
Earnings Per Share [Abstract]            
Net Income $ 6,095,000 $ 3,817,000 $ 6,222,000 $ 4,326,000 $ 9,912,000 $ 10,548,000
Common Shares:            
Weighted average common shares outstanding - Basic 14,658,000   14,658,000   14,658,000 14,658,000
Weighted average common shares outstanding - Diluted 14,658,000   14,658,000   14,658,000 14,658,000
Net income per common share – basic $ 0.42   $ 0.42   $ 0.68 $ 0.72
Net income per common share – diluted $ 0.42   $ 0.42   $ 0.68 $ 0.72