Accrued Expenses and Other Current Liabilities (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Accounts Payable and Accrued Liabilities, Current [Abstract]
Professional fees	$ 316,000	$ 340,000
Research and development costs	2,004,000	2,340,000
Wages, bonuses and employee benefits	349,000	282,000
Other	134,000	71,000
Total	$ 2,802,833	$ 3,033,189