v3.22.2.2
Earnings Per Share - Computation of Diluted Earnings Per Share (Detail) - shares
12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Earnings Per Share [Abstract]    
Weighted average common stock outstanding, basic 7,483,342 7,367,948
Dilutive impact of RSUs 74,666 41,164
Weighted average common stock outstanding, diluted 7,558,008 7,409,112