Common Stock Warrants - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended				12 Months Ended	1 Months Ended	12 Months Ended			1 Months Ended		12 Months Ended		12 Months Ended
	Mar. 09, 2012	Jun. 30, 2013	Jun. 30, 2011	Sep. 28, 2012	Mar. 10, 2010	Jun. 30, 2010 Placement Agent [Member]	Mar. 09, 2012 Accredited Investor [Member]	Jun. 30, 2013 Accredited Investor [Member]	Jun. 30, 2012 Accredited Investor [Member]	Jun. 30, 2010 Accredited Investor [Member]	Oct. 07, 2011 Institutional and Accredited Investors [Member]	Oct. 12, 2010 Institutional and Accredited Investors [Member]	Jun. 30, 2013 Institutional and Accredited Investors [Member]	Mar. 09, 2012 Institutional and Accredited Investors [Member]	Jun. 30, 2013 Series C Preferred Stock [Member]	Jun. 30, 2013 Series D Preferred Stock [Member]
Class of Warrant or Right [Line Items]
Issuance of warrants to purchase common stock	825,000	225,000	50,000			85,000	3,022,388	2,558,139	2,197,674	200,000	1,468,752	3,125,000	4,683,685		825,000	6,650,000
Exercise price of warrants		$ 1.34	$ 1.40	$ 1.34	$ 2.50	$ 2.50		$ 1.34	$ 1.34	$ 2.40	$ 2.00	$ 1.40	$ 0.95	$ 1.34	$ 1.60	$ 0.95
Warrants expiration date		November 30, 2013
Warrants issued to consultant		56,250