Stock-based compensation - Fair value of vested RSUs and PSUs issued (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of awards	$ 7,742	$ 18,926	$ 9,982
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of awards	$ 11,142	$ 15,993	$ 1,650