Prepayments and Other Current Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Insurance premiums	$ 724	$ 641
Vendor prepayment	0	602
Rents, licenses and other	1,283	1,146
Total prepayments and other current assets	$ 2,007	$ 2,389