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Inventories (Tables)
3 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Net Inventories
Net inventories at December 31, 2021 and September 30, 2021 consist of the following:
 
     December 31, 2021      September 30, 2021  
Raw materials
   $ 27,076,000      $ 25,858,000  
Work in process
     6,341,000        6,280,000  
Finished goods
     12,317,000        9,730,000  
Used equipment
     —          20,000  
    
 
 
    
 
 
 
     $ 45,734,000      $ 41,888,000