Meda License, Development and Supply Agreements - Additional Information (Detail) (USD $)	3 Months Ended				1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	1 Months Ended	0 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Onsolis [Member]	Mar. 31, 2013 Onsolis [Member]	Oct. 31, 2009 U.S. [Member]	Mar. 31, 2014 U.S. [Member]	Oct. 31, 2012 EU [Member]	Mar. 31, 2014 EU [Member]	Dec. 31, 2012 EU [Member]	Mar. 31, 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 31, 2012 Meda License Development and Supply Agreement [Member] EU [Member] Onsolis [Member]	Mar. 31, 2014 Milestones [Member] EU [Member]
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Patent expiration year	2020
Aggregate milestones and services revenue recognized	$ 11,283,833	$ 1,621,977			$ 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	953,990		1,000,000	0						300,000	1,800,000
Cost of product royalties	725,597	375,000	700,000	400,000
Estimated portion of upfront payments						$ 1,100,000		$ 100,000
Shelf life of the product	24 months
Period for application review	6 months