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Costs and Estimated Earnings in Excess of Billings (Tables)
12 Months Ended
Sep. 30, 2022
Text Block [Abstract]  
Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts
Costs and estimated earnings in excess of billings on uncompleted contracts as of September 30, 2022 and 2021 consisted of the following:
 
     
                            
     
                            
 
 
  
September 30,
 
 
  
2022
 
  
2021
 
Costs incurred on uncompleted contracts
   $  12,660,000      $  11,483,000  
Estimated earnings
     4,780,000        4,395,000  
    
 
 
    
 
 
 
       17,440,000        15,878,000  
Billings to date
     15,322,000        13,975,000  
    
 
 
    
 
 
 
Costs and estimated earnings in excess of billings
   $ 2,118,000      $ 1,903,000