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Inventories - Schedule of Inventory (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Sep. 30, 2020
Inventory [Line Items]    
Allowance for excess and obsolete inventory $ (3,168) $ (3,054)
Total inventories, net 5,708 5,576
New equipment    
Inventory [Line Items]    
Inventory, gross 1,241 1,311
Refurbished and used equipment    
Inventory [Line Items]    
Inventory, gross $ 7,635 $ 7,319