Property, Plant and Equipment, net - Schedule of Property, Plant and Equipment, Net (Detail) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2016	Jun. 30, 2016
Property, Plant and Equipment [Line Items]
Land	$ 9,274	$ 9,504
Buildings and improvements	265,829	269,619
Machinery and equipment	1,355,527	1,341,816
Furniture and fixtures	28,882	28,251
Property, plant and equipment, gross	1,659,512	1,649,190
Less accumulated depreciation and amortization	(1,080,473)	(1,055,900)
Property, plant and equipment, net	$ 579,039	$ 593,290
Buildings and Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	1 year
Buildings and Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	50 years
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	20 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (in Years)	10 years