Net Loss Attributable to Common Stockholders and Net Loss per Share - Calculation of Basic and Diluted Net Loss per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Basic and Diluted:
Net loss	$ (6,053)	$ (5,477)	$ (12,132)	$ (11,764)
Basic and Diluted:
Weighted average shares of common stock computing basic and diluted net loss per share	45,127	44,440	44,982	44,353
Net loss per share:
Basic and Diluted	$ (0.13)	$ (0.12)	$ (0.27)	$ (0.27)
Securities excluded from weighted average shares used in computing diluted net loss per share because the effect would have been anti-dilutive:	5,207	10,341	5,328	10,057