Net Loss per Share - Additional Information (Detail) - shares	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options to purchase common stock outstanding	1,570,000	1,158,000	844,000	1,473,000
Stock options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares excluded from calculation of diluted net loss per share attributable to common stockholders	300,000	600,000	100,000
Options to purchase common stock outstanding	1,570,000	1,158,000	844,000