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Stock Compensation Plans (Tables)
6 Months Ended
Mar. 31, 2022
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award
Stock option activity for the six months ended March 31, 2022 and 2021 is summarized as follows:
 Six Months Ended March 31, 2022Six Months Ended March 31, 2021
  Number of SharesWeighted
Average
Exercise
Price
 Number of SharesWeighted
Average
Exercise
Price
Options outstanding, beginning of period406,815 $21.62 395,349 $18.45 
Exercised(27,470)12.09 (53,564)9.70 
Granted1,000 27.25 1,500 19.13 
Forfeited(17,170)25.91 (4,520)27.57 
Options outstanding, end of period363,175 $22.15 338,765 $19.71 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
The weighted average assumptions for options granted during the six months ended March 31, 2022 were as follows:
Expected volatility34 %
Expected life (in years)5
Expected dividend yield3.49 %
Risk free interest rate1.22 %
Grant date fair value per share$5.88 
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range
Additional information regarding options outstanding at March 31, 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)
$5.86-6.004,000 $5.93 0.54,000 $5.93 0.5
  9.0017,500 9.00 1.617,500 9.00 1.6
10.26-10.7150,575 10.56 2.950,575 10.56 2.9
15.67-19.1389,450 16.53 7.336,130 16.05 5.7
26.50-27.2541,700 27.13 7.616,280 27.12 7.5
28.23-29.69122,250 28.79 8.037,400 29.69 5.5
31.8037,700 31.80 6.522,620 31.80 6.5
 363,175 $22.15 6.5184,505 $19.33 4.7