Endo License and Development Agreement (Details Textual) (USD $) In Millions, unless otherwise specified	1 Months Ended	9 Months Ended
	May 31, 2012	Sep. 30, 2012 NumberofMilestones	Jan. 17, 2012
Endo License and Development Agreement (Textual) [Abstract]
Non-refundable payment received			$ 30.0
Endo License and Development Agreement (Additional Textual) [Abstract]
Potential milestone payments		95
Potential milestone payments on issuance of patent		15
Payments receivable on achievement of post-approval sales thresholds		55
Term of Endo Agreement		10 years
Extended patent on drug delivery technology		2020 to 2027
Proceeds from Milestone payment received	15
Recognized upfront payment allocated to the clinical development services		4.0
Deferred upfront payment allocated to clinical development services		10.5
Number of potential milestone payments		6
Potential milestone payments on intellectual property rights		35
Potential milestone payment receivable clinical development		20
Potential milestone payment receivable regulatory events		40
Number of potential sales milestones		4
License Agreement Terms [Member]
Endo License and Development Agreement (Textual) [Abstract]
Non-refundable payment received		15.6
Clinical Development Services [Member]
Endo License and Development Agreement (Textual) [Abstract]
Non-refundable payment received		$ 14.4