Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016
Payables and Accruals [Abstract]
Clinical trial costs	$ 1,895	$ 1,678
Personnel costs	1,008	1,314
Professional fees	728	535
Other	57	56
Accrued expenses	$ 3,688	$ 3,583