Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Accrued professional fees	$ 824	$ 402
Accrued compensation	755	540
Accrued other	200	254
Total accrued expenses	$ 1,779	$ 1,196