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Stock Compensation Plans (Tables)
 12 Months Ended
Sep. 30, 2022
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Schedule of Stock Option Activity
Stock option activity for the years ended September 30, 2022, 2021 and 2020 is summarized as follows:
 Number of
Shares		Weighted Average
Exercise Price
Outstanding September 30, 2019378,304 $18.15 
Options granted69,150 17.01 
Options exercised(37,975)10.31 
Options forfeited(14,130)25.36 
Outstanding September 30, 2020395,349 18.45 
Options granted81,000 28.06 
Options exercised(64,264)9.81 
Options forfeited(5,270)26.91 
Outstanding September 30, 2021406,815 21.62 
Options granted74,000 27.40 
Options exercised(36,720)11.31 
Options forfeited(22,170)26.01 
Outstanding September 30, 2022421,925 $23.30 
Schedule of Fair Value Assumptions
The weighted average assumptions for options granted during the years ended September 30, 2022, 2021 and 2020 were as follows:
 202220212020
Expected volatility33 %35 %33 %
Expected life (in years)555
Expected dividend yield3.61 %3.39 %5.36 %
Risk free interest rate4.17 %1.02 %0.28 %
Grant date fair value per share$6.87 $6.20 $2.70 
Schedule of Stock Option Plans, by Exercise Price Range
Additional information regarding options outstanding at September 30, 2022 is as follows:
 Options OutstandingOptions Exercisable
Range of
Exercise
Prices ($)		NumberWeighted
Average
Exercise
Price 		Weighted
Average
Remaining
Contractual
Life (Years)		NumberWeighted
Average
Exercise
Price		Weighted
Average
Remaining
Contractual
Life (Years)
   9.0014,000 9.00 1.114,000 9.00 1.1
 10.26-10.71 50,575 10.56 2.550,575 10.56 2.5
 15.67-19.13 86,900 16.54 6.849,410 16.25 5.9
 26.50-27.40 113,100 27.31 8.924,620 27.13 7.0
 28.23-29.69120,050 28.80 7.561,250 29.34 6.0
 31.8037,300 31.80 6.030,160 31.80 6.0
 421,925 $23.30 6.8230,015 $21.25 5.0