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Stock Compensation Plans (Tables)
3 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award
Stock option activity for the three months ended December 31, 2021 and 2020 is summarized as follows:
 Three Months Ended December 31, 2021Three Months Ended December 31, 2020
  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(8,900)14.63 (9,900)9.70 
Granted1,000 27.25 1,500 19.13 
Forfeited(11,594)25.28 (2,320)26.69 
Options outstanding, end of period387,321 $21.70 384,629 $18.62 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
The weighted average assumptions for options granted during the three months ended December 31, 2021 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 December 31, 2021 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 0.84,000 $5.93 0.8
  9.0026,000 9.00 1.826,000 9.00 1.8
10.26-10.7157,875 10.57 3.257,875 10.57 3.2
15.67-19.1392,300 16.52 7.540,980 16.04 5.9
26.50-27.2543,016 27.13 7.817,596 27.13 7.8
28.23-29.69125,050 28.81 8.240,200 29.69 5.8
31.8039,080 31.80 6.824,000 31.80 6.8
 387,321 $21.70 6.6210,651 $18.80 4.8