Other Expense - Summary of Other Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Other Income and Expenses [Abstract]
Amortization of debt discount	$ (127)	$ 0
Amortization of deferred financing costs	(43)	$ 0
Interest expense	(80)
Change in fair value of warrant liability	(159)
Total other expense	$ (409)