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INVENTORIES (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Sep. 30, 2019
Inventory, Net, Items Net of Reserve Alternative [Abstract]    
Raw materials $ 63,296 $ 60,157
Work in process 17,915 12,940
Finished goods 76,661 72,181
Total $ 157,872 $ 145,278