Meda License, Development and Supply Agreements - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended		6 Months Ended				1 Months Ended	6 Months Ended	1 Months Ended	6 Months Ended	12 Months Ended		6 Months Ended	12 Months Ended	1 Months Ended	0 Months Ended
	Jun. 25, 2014	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Onsolis [Member]	Jun. 30, 2013 Onsolis [Member]	Oct. 31, 2009 U.S. [Member]	Jun. 30, 2014 U.S. [Member]	Oct. 31, 2012 EU [Member]	Jun. 30, 2014 EU [Member]	Dec. 31, 2012 EU [Member]	Jun. 30, 2014 Milestones [Member] EU [Member]	Jun. 30, 2014 Meda License Development and Supply Agreement [Member]	Dec. 31, 2013 Meda License Development and Supply Agreement [Member]	Oct. 31, 2012 Meda License Development and Supply Agreement [Member] EU [Member]	May 21, 2012 Meda License Development and Supply Agreement [Member] EU [Member] Onsolis [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Patent expiration year				2020
Aggregate milestones and services revenue recognized	$ 10,000,000	$ 10,674,895	$ 1,908,949	$ 21,958,728	$ 3,530,926			$ 59,700,000		$ 17,500,000						$ 2,500,000	$ 2,500,000
Remaining deferred revenue related to the EU Media arrangement milestones													1,200,000
Additional revenues in milestones												5,000,000
Product royalty revenues		892,098	855,101	1,846,088	855,101	1,800,000	900,000							400,000	1,800,000
Cost of product royalties		686,966	690,207	1,412,563	1,065,207	1,400,000	1,100,000
Estimated portion of upfront payments									$ 1,100,000		$ 100,000
Shelf life of the product				24 months
Period for application review				6 months