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Stockholders' Equity Transactions (Details) - USD ($)
3 Months Ended 12 Months Ended
Sep. 30, 2021
Jun. 30, 2021
Sep. 16, 2014
Equity      
Authorized to be repurchased (in shares)     1,000,000
Common Stock Shares Outstanding 18,353,584 18,351,084 19,400,000
Stock repurchased (in shares) 0 0  
Cash received from stock option exercised $ 16,000    
Employee      
Equity      
Exercised 2,500    
Cash received from stock option exercised $ 16,000    
Certain employees and directors      
Equity      
Exercised, cashless   7,100  
Surrendered (in shares)   3,367