Reduction in workforce - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended	12 Months Ended
	Apr. 30, 2022	Sep. 30, 2022	Dec. 31, 2023	Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]
Payments for restructuring				$ 4,940
Restructuring expense			$ 0	4,940
April 2022 Reduction
Restructuring Cost and Reserve [Line Items]
Plans to reduce workforce, as a percent	30.00%	30.00%
Payments for restructuring		$ 4,900		4,940
Restructuring expense				$ 4,940