Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Accounting Policies [Abstract]
Investment securities maturity period for consideration as cash equivalents, in days	90 days
Inventory	$ 8.2	$ 6.5
Change in estimates of projected future variables that has no impact on reported value of goodwill, percentage	10.00%
Advertising costs	$ 2.4	$ 2.4	$ 2.4