Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	1 Months Ended		3 Months Ended		6 Months Ended	9 Months Ended			1 Months Ended
	Jan. 31, 2012	Jun. 30, 2011	Mar. 31, 2013	Mar. 31, 2012 Installment	Dec. 31, 2012 Installment	Mar. 31, 2013	Mar. 31, 2012	Oct. 03, 2012	Mar. 07, 2013 Omnibus Stock Incentive Plan 2009 Restricted Stock	Sep. 03, 2012 Omnibus Stock Incentive Plan 2009 Restricted Stock	Sep. 03, 2012 Omnibus Stock Incentive Plan 2009 Restricted Stock Each Member Of Board Of Directors	Jul. 12, 2012 Amendment	Mar. 13, 2012 Amendment	Dec. 31, 2012 Amendment December 1, 2012 Payment date	Dec. 31, 2012 Amendment June 1, 2013 Payment date	Dec. 31, 2012 Amendment July 1, 2013 Payment date	Dec. 31, 2012 Amendment December 1, 2013 Payment date	Mar. 31, 2013 Significant Observable Inputs (Level 2)	Jun. 30, 2012 Significant Observable Inputs (Level 2)
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Anti-dilutive common stock shares excluded from computation of net income per share			390,000	220,000		457,800	443,917
License fee	$ 300,000	$ 300,000		$ 708,334								$ 354,167	$ 354,167
Additional license fees, upon achievement of certain milestones								150,000						204,167	204,167	150,000	150,000
Cumulative contract license fees				4,300,000	2,800,000
License fees number of annual payments				6	4
Royalty and licensing income			1,000,000	2,100,000		3,200,000	4,100,000
Royalty expenses			133,000	181,000		426,000	551,000
Share based compensation, common stock granted									68,000	12,000	3,000
Share based compensation, vesting period									3 years	3 years
Stock based compensation			52,000	53,000		135,000	167,000
Fair value of asset																		$ 146,000	$ 922,000