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Property Plant and Equipment (Detail) - USD ($)
$ in Thousands
Sep. 30, 2017
Jun. 30, 2017
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, gross $ 835,008 $ 730,460
Less accumulated depreciation (374,149) (362,732)
Property, Plant and Equipment, net 460,859 367,728
Land and Land Improvements    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, gross 9,228 5,667
Buildings and Improvements    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, gross 200,774 144,293
Machinery and Equipment    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, gross 529,412 492,042
Construction in Progress    
Property Plant And Equipment [Line Items]    
Property, Plant and Equipment, gross $ 95,594 $ 88,458