Property Plant and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Jun. 30, 2016
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, gross	$ 644,543	$ 559,362
Less accumulated depreciation	(339,369)	(316,505)
Property, Plant and Equipment, net	305,174	242,857
Land and Improvements
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, gross	4,880	4,990
Buildings and Improvements
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, gross	135,142	110,219
Machinery and Equipment
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, gross	429,556	409,551
Construction in Progress
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, gross	$ 74,965	$ 34,602