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Stock-Based Compensation Plans (Details Narrative)
3 Months Ended 6 Months Ended
Mar. 31, 2022
shares
Mar. 31, 2021
shares
Mar. 31, 2020
shares
Jun. 30, 2022
USD ($)
Integer
$ / shares
shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Number of plans | Integer       2
Expiration period       10 years
Vesting rights       exercisable immediately or become exercisable in cumulative installments of 20% or 25%
Dividend yield       0.00%
Minimum volatility       29.00%
maximum volatility       41.00%
Risk free interest rate minimum       1.40%
Risk free interest rate maximum       2.90%
Expected life       3 years
Expected life       7 years
Shares available | shares       366,723
Intrinsic value | $       $ 1,748,000
Intrinsic value | $       $ 1,865,000
Closing price | $ / shares       $ 60.35
Time Based Awards Granted [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Granted | shares 7,448 8,896   7,448
Vesting period 4 years 4 years    
Performance Based Awards Granted [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Granted | shares 14,016 18,882 20,520 14,016
Vesting period 5 years 5 years 5 years  
Employee Stock [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Stock grants | shares 865 1,098    
Share-Based Payment Arrangement, Option [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Unrecognized compensation cost | $       $ 94,000
Recognition period 1 year 4 months 25 days      
Restricted Stock [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Unrecognized compensation cost | $       $ 2,144,000
Recognition period       3 years 4 months 25 days