Cash and cash equivalents (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Cash and Cash Equivalents [Line Items]
Restricted cash	$ 20,800	$ 15,000
Cash and cash equivalents	133,811	205,043
Short-Term Investments
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 1,700	$ 0