Meda License, Development and Supply Agreements (Details Textual) (USD $)	3 Months Ended				1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended	12 Months Ended		1 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 ONSOLIS [Member]	Mar. 31, 2012 ONSOLIS [Member]	Oct. 31, 2009 U.S. [Member]	Mar. 31, 2013 U.S. [Member]	Oct. 31, 2012 EU [Member]	Mar. 31, 2013 EU [Member]	Dec. 31, 2012 EU [Member]	Mar. 31, 2013 Milestones [Member] EU [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]
Meda License, Development and Supply Agreements (Textual) [Abstract]
Aggregate milestones and services revenue recognized	$ 1,621,977	$ 16,504,165			$ 59,700,000		$ 17,500,000				$ 2,500,000	$ 2,500,000
Additional revenues in milestones									5,000,000
Remaining deferred revenue related to the EU Meda arrangement milestones										1,400,000
Estimated portion of upfront payments						1,360,000		60,000
Product royalty revenues			0	0
Cost of product royalties	$ 375,000	$ 375,000	$ 400,000	$ 400,000
Meda License, Development and Supply Agreements (Additional Textual) [Abstract]
Shelf life of the product	24 months
Stability data period	6 months