Property Plant and Equipment (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, gross	$ 588,287	$ 559,362
Less accumulated depreciation	(327,375)	(316,505)
Property, Plant and Equipment, net	260,912	242,857
Land and Land Improvements
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, gross	5,001	4,990
Buildings and Improvements
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, gross	110,703	110,219
Machinery and Equipment
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, gross	420,306	409,551
Construction in Progress
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, gross	$ 52,277	$ 34,602