Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Compensation	$ 229	$ 1,806
Professional fees	619	$ 404
Clinical Trial expenses	143
Other expenses	228	$ 123
Accrued expenses	$ 1,219	$ 2,333