Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended				12 Months Ended
	Sep. 30, 2014	Sep. 30, 2011	Feb. 28, 2009	Nov. 30, 2007	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Preferred stock, authorized					5,000,000
Preferred stock par value per share					$ 0.001
Preferred stock, outstanding					0
Closing stock price					$ 2.82
Total intrinsic value of the options exercised during the period					$ 53	$ 1,000	$ 3,800
Options granted during period					298,650	928,000	583,250
Options granted during period, weighted-average price					$ 2.06	$ 3.50	$ 5.93
2005 Management Stock Option Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Increased in shares	1,000,000	500,000		500,000
Option granted at price not less than percentage of fair market value of the common stock on the date of grant					100.00%
Right of repurchase, lapse rate with respect to shares granted					2.08%
Exercisable period from the date of grant					10 years
Options granted during period					98,875	670,200
Options granted during period, weighted-average price					$ 3.99	$ 6.10
2005 Stock Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Increased in shares			1,000,000
Option vest, minimum years					4 years
Option vest, maximum years					10 years
Options granted during period					199,775	257,800	583,250
Options granted during period, weighted-average price					$ 3.98	$ 4.77	$ 9.68
2000 Non-Management Stock Option Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option granted at price not less than percentage of fair market value of the common stock on the date of grant					85.00%
Option vest, minimum years					4 years
Option vest, maximum years					10 years
Plan expired					July 2010
1998 Stock Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option granted at price not less than percentage of fair market value of the common stock on the date of grant					85.00%
Option vest, minimum years					4 years
Option vest, maximum years					10 years
Plan expired					November 2010