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Shareholders' Equity and Stock-Based Compensation (Tables)
 12 Months Ended
Sep. 30, 2022
2009 Plan [Member]  
Summary of Option Activity under Stock-Based Compensation Plan
The following table summarizes option activity under the 2009 Plan:
 
     Number of
Shares		      Average
Exercise Price
Per Share		  
Options outstanding at September 30, 2020
      252,492      $ 6.205  
Options exercised during fiscal 2021
      (51,508 )     $ 5.126  
Options expired on September 30, 2021
      (170,984 )     $ 5.623  
    
 
 
           
Options outstanding at September 30, 2021
      30,000      $ 11.380  
Options cancelled on November 1, 2021
      (30,000 )     $ 11.380  
    
 
 
           
Options outstanding at September 30, 2022
      —        $ —