Income taxes - Schedule of Valuation Allowances (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Deferred Tax Assets, Valuation Allowance [Roll Forward]
Beginning at beginning of period	$ 25,001	$ 26,339	$ 41,929
Additions to valuation allowance	2,212	5,001	7,228
Reductions to valuation allowance	(3,412)	(6,339)	(22,818)
Balance at the end of the period	$ 23,801	$ 25,001	$ 26,339