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Components of Inventories (Detail) - USD ($)
$ in Thousands
Dec. 31, 2017
Jun. 30, 2017
Inventory Disclosure [Abstract]    
Raw materials $ 86,974 $ 78,979
Work in progress 81,094 61,679
Finished goods 67,400 63,037
Inventories, Total $ 235,468 $ 203,695