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Inventories (Tables)
6 Months Ended
Mar. 31, 2022
Inventory Disclosure [Abstract]  
Net Inventories
Net inventories at March 31, 2022 and September 30, 2021 consist of the following:
 
     March 31,
2022
     September 30,
2021
 
Raw materials
   $ 29,847,000      $ 25,858,000  
Work in process
     7,858,000        6,280,000  
Finished goods
     9,517,000        9,730,000  
Used equipment
     —          20,000  
    
 
 
    
 
 
 
     $ 47,222,000      $ 41,888,000