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Inventory (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Sep. 30, 2018
Inventory Disclosure [Abstract]    
Inventory, Raw Materials, Gross $ 4,447 $ 4,453
Inventory, Work in Process, Gross 6,171 5,168
Inventory, Finished Goods, Gross 1,726 1,746
Other Inventory, Gross 12,006 9,599
Inventory, Net $ 24,350 $ 20,966