Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Payables and Accruals [Abstract]
Compensation	$ 277	$ 297
Professional fees	528	604
Clinical Trial expenses	393	158
Other expenses	511	489
Accrued expenses	$ 1,709	$ 1,548