Property, Plant and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Property Plant And Equipment [Abstract]
Carrying value of land and building	$ 1,200
Depreciation expense	$ 41,114	$ 41,805	$ 34,135