Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

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Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Sep. 30, 2018
Inventories, net [Abstract]    
Raw materials $ 37,502 $ 34,880
Work in process 73,290 67,827
Finished goods 77,527 77,744
Inventories $ 188,319 $ 180,451