Property Plant and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, gross	$ 682,463	$ 559,362
Less accumulated depreciation	(346,711)	(316,505)
Property, Plant and Equipment, net	335,752	242,857
Land and Improvements
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, gross	4,604	4,990
Buildings and Improvements
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, gross	131,542	110,219
Machinery and Equipment
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, gross	448,643	409,551
Construction in Progress
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, gross	$ 97,674	$ 34,602