Restructuring - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Other Income and Expenses [Abstract]
Restructuring expenses	$ 1,384	$ 459	$ 1,792	$ 825