Commitments and Contingencies (Details) (USD $)		12 Months Ended						12 Months Ended			0 Months Ended		12 Months Ended	0 Months Ended		0 Months Ended			12 Months Ended
	Nov. 02, 2012 item	Dec. 31, 2012 Employment and Consulting Agreements Gary S. Jacob, Ph.D item	Dec. 31, 2012 Employment and Consulting Agreements Gary S. Jacob, Ph.D Maximum	Dec. 31, 2012 Employment and Consulting Agreements Gary S. Jacob, Ph.D Minimum	Dec. 31, 2012 Employment and Consulting Agreements Gabriele M. Cerrone item	Dec. 31, 2010 Employment and Consulting Agreements Gabriele M. Cerrone item	Oct. 06, 2010 Employment and Consulting Agreements Gabriele M. Cerrone	Dec. 31, 2012 Employment and Consulting Agreements Gabriele M. Cerrone Maximum	Dec. 31, 2012 Employment and Consulting Agreements Gabriele M. Cerrone Minimum	Dec. 31, 2012 Employment and Consulting Agreements Bernard F. Denoyer item	Jan. 02, 2013 Employment and Consulting Agreements Bernard F. Denoyer Subsequent Event	Dec. 31, 2012 Employment and Consulting Agreements Bernard F. Denoyer Maximum	Dec. 31, 2012 Employment and Consulting Agreements Kunwar Shailubhai item	Jan. 02, 2013 Employment and Consulting Agreements Kunwar Shailubhai Subsequent Event	Dec. 31, 2012 Employment and Consulting Agreements Kunwar Shailubhai Maximum	Mar. 30, 2012 Lease agreements Corporate headquarters at 420 Lexington Avenue, New York	Mar. 28, 2012 Lease agreements Corporate headquarters at 420 Lexington Avenue, New York	Aug. 28, 2012 Lease agreements 20th floor of 420 Lexington Avenue, New York	Dec. 31, 2012 Lease agreements Small laboratory and several offices at Bucks County Biotechnology Center in Doylestown, Pennsylvania
Commitments and contingencies
Renewal term of agreement										1 year			1 year
Current base salary per year		$ 425,000			$ 425,000					$ 200,850	$ 215,000		$ 250,000	$ 270,000
Cash bonus, as a percentage of base salary per year based on meeting certain performance objectives and bonus criteria			50.00%					50.00%
Cash bonus, percentage of base salary at the discretion of the Compensation Committee of the Board of Directors												25.00%			30.00%
Enterprise value of the joint venture for receipt of realization bonus				250,000,000					250,000,000
License fees contracted to receive receipt of realization bonus				50,000,000					50,000,000
Multiplier percentage of enterprise value of joint venture or license fees of an out license for bonus realization		0.50%			0.50%
Enterprise value at the time of the merger or sale for receipt of bonus				400,000,000					400,000,000
Beneficial ownership of surviving entity after consummation of the merger, owned by stockholders prior to consummation of the merger or sale for receipt of bonus (as a percent)			20.00%	20.00%				20.00%	20.00%
Period after the merger or sale when enterprise value equals or exceed specified amount		12 months			12 months
Enterprise value at the time of merger or sale or twelve months after merger or sale for receipt of bonus				250,000,000					250,000,000
Multiplier percentage of enterprise value on fulfillment of specified criteria for bonus receipt		2.50%			2.50%
Period preceding termination for which average monthly base salary paid or accrued will be paid to individual as severance payment		3 months			3 months					3 months
Expense compensation multiplier of the sum of average base salary during the specified period preceding the termination		12			12
Period preceding the termination for which an average base salary will be paid to individual as expense compensation		3 months			3 months								3 months
Period following the termination date for extension of the exercise period of options		10 years			10 years					10 years			10 years
Period following termination for which cost of medical insurance will be paid		12 months			12 months					12 months			12 months
Threshold required for realization bonus to be accrued on the cumulative gross proceeds of financing transactions, achieved							20,000,000
Realization bonus expense						1,211,912
Gross proceeds from financing transaction on cumulative basis subsequent to a specific date for deferment of bonus payment						30,000,000
Number of business days after termination of agreement without cause or good reason for deferment of bonus payment						10
Severance payment multiplier of the average monthly base compensation paid or accrued during specified period preceding the termination					12					12			12
Monthly rate of lease																$ 19,000	$ 16,000	$ 35,000	$ 2,800
Number of stockholder class action cases	2