Prepaid expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid expenses	$ 3,431	$ 2,188
Value added tax receivable	585	931
Prepaid insurance	371	921
Other assets	1,384	463
Total prepaid expenses and other current assets	$ 5,771	$ 4,503