Income Taxes - Components of (Loss) Income Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Income Tax Disclosure [Abstract]
U.S. operations	$ (17,566)	$ (19,780)	$ 8,120
Non-U.S. operations	(919)	(1,922)	(1,677)
(Loss) income before income taxes	$ (18,485)	$ (21,702)	$ 6,443