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Inventory (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Sep. 30, 2019
Inventory Disclosure [Abstract]    
Inventory, Raw Materials, Gross $ 3,662 $ 4,104
Inventory, Work in Process, Gross 5,704 6,301
Inventory, Finished Goods, Gross 1,384 1,861
Other Inventory, Gross 11,538 9,277
Inventory, Net $ 22,288 $ 21,543