Prepaid Expenses and Other Current Assets (Details) - Schedule of prepaid expenses and other current assets - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Schedule of prepaid expenses and other current assets [Abstract]
Prepaid insurance	$ 1,683	$ 279
Prepaid research and development	463	684
Prepaid software	133	79
Accrued interest on marketable debt securities	528	634
Other prepaid expenses	287	173
Other current assets	4	34
Total	$ 3,098	$ 1,883