Segment and geographic information - Schedule of long-lived assets by physical location (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 13,965	$ 11,358
Poland
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	2,663	1,522
Serbia
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	2,516	2,457
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	2,394	2,174
Ukraine
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	2,304	2,437
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 4,088	$ 2,768