Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Payables and Accruals [Abstract]
Accrued legal	$ 90	$ 90
Accrued sales commission	42	40
Accrued research and development	65
Accrued accounting	8	11
Accrued interest	2	18
Accrued other	189	59
Accrued expenses	$ 396	$ 218