Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 226,000	$ (30,000)
Federal alternative minimum tax liability	260,000
Revenue recognition	25,000,000
Foreign research and development refundable tax credits	34,000	30,000
Unrecognized tax benefits	0	0
Accrued penalties or interest related to uncertain tax positions	$ 0		$ 0