Restructuring - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Other Income and Expenses [Abstract]
Restructuring expenses	$ 46	$ 1,384	$ 573	$ 1,792