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Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($)
$ in Thousands
Sep. 30, 2015
Jun. 30, 2015
Payables and Accruals [Abstract]    
Clinical trial costs $ 1,418 $ 1,424
Personnel costs 344 735
Professional fees 280 384
Other 25 28
Accrued expenses $ 2,067 $ 2,571