Accrued Expenses (Details) - Schedule of accrued expenses - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Schedule of accrued expenses [Abstract]
Employee bonuses	$ 453	$ 1,530
Taxes	52	159
Legal fees	192	156
Research and development costs	389	37
Other expenses	282	31
Total	$ 1,368	$ 1,913