Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Income Tax Disclosure [Abstract]
Accumulated foreign earnings	$ 0
Change in valuation allowance for deferred tax assets	2,500,000	$ (200,000)
Accumulated deferred tax benefits associated with employee stock options	2,600,000
Unrecognized tax benefits	7,915,000	$ 7,413,000	$ 6,982,000
Unrecognized tax benefits that, if recognized, would reduce the effective tax rate	300,000
Accrued interest or penalties, unrecognized tax benefits	$ 0