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Costs and Estimated Earnings in Excess of Billings (Tables)
3 Months Ended
Dec. 31, 2019
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 December 31, 2019 and September 30, 2019 consist of the following:
 
   December 31, 2019   September 30, 2019 
Costs incurred on uncompleted contracts
  $0   $18,707,000 
Estimated earnings
   0    9,063,000 
   
 
 
   
 
 
 
    0    27,770,000 
Billings to date
   0    13,932,000 
   
 
 
   
 
 
 
Costs and estimated earnings in excess of billings
  $0   $13,838,000