Prepaid expenses and other current assets (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid expenses	$ 2,807	$ 3,323
Guarantee deposits placed	2,011	2,295
Value added, goods and service taxes receivable	1,760	1,384
Other prepaid and current assets	1,696	1,152
Total prepaid expenses and other current assets	$ 8,274	$ 8,154