Collaboration and License Agreements (Details 2) (USD $)	3 Months Ended		6 Months Ended		1 Months Ended		3 Months Ended			6 Months Ended			1 Months Ended				3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	May 31, 2009 Almirall, S.A.	Apr. 30, 2009 Almirall, S.A.	Jun. 30, 2014 Almirall, S.A. item	Mar. 31, 2014 Almirall, S.A. item	Jun. 30, 2013 Almirall, S.A. item	Jun. 30, 2014 Almirall, S.A.	Jun. 30, 2013 Almirall, S.A.	May 31, 2013 Almirall, S.A.	Nov. 30, 2009 Almirall, S.A. Convertible preferred stock	Apr. 30, 2009 Almirall, S.A. Development and sales milestones	Nov. 30, 2010 Almirall, S.A. Development milestones	Apr. 30, 2009 Almirall, S.A. Development milestones Convertible preferred stock	Jun. 30, 2014 Almirall, S.A. Amended Development Milestones item	Mar. 31, 2014 Almirall, S.A. Amended Development Milestones item	Jun. 30, 2013 Almirall, S.A. Amended Development Milestones item
Collaboration and License Agreements
Up-front fee received, net					$ 38,000,000
Up-front fee received					40,000,000
Equity investment in the entity's capital stock													15,000,000
Contingent equity investment to be received form forward purchase contract																15,000,000
Asset value for contingent equity investment by collaborative party recorded at inception of agreement						6,000,000
Incremental deferred revenue related to contingent equity investment						6,000,000
Issuance of Convertible preferred stock (in shares)													681,819
Maximum contingent equity and milestone payments to be received														40,000,000
Number of milestones achieved under collaboration agreement																	1	1	2
Milestone payment received															20,000,000		1,000,000	1,000,000
Revenue recognized from sale of API							1,700,000		5,900,000	5,100,000	8,100,000
Revenue recognized in royalty payments							200,000			300,000
Revenue recognized in commercial launch milestones							900,000		1,900,000	1,900,000	1,900,000
Collaborative arrangements revenue	6,840,000	9,663,000	21,445,000	12,918,000			2,800,000		7,800,000	7,300,000	10,000,000
Milestone payment received, net of foreign withholding taxes															19,000,000		1,000,000		1,900,000
Milestones, net of foreign tax withholdings																	1,000,000		1,000,000
Total milestone payment due upon the first commercial launch in all major European Union countries																			17,000,000
Number of major European Union countries									5
Number of major European Union countries in which commercial launch occurred							2	2	2
Milestone payment due upon the first commercial launch in each of the five major European Union countries												$ 4,000,000