Insurance and reinsurance - Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract]
Insurance and reinsurance assets	$ 263,224	$ 44,191	$ 37,036
Increase/(Decreases) reinsurance recoverables	60,189	11,806	0
Insurance and reinsurance assets, net	203,035	32,385	$ 37,036
Incurred related to:
Current Years	2,436	13,262
Prior Years	(36,200)	1,414
Total	(33,764)	14,676
Paid related to:
Current Years	3,941	6,874
Prior Years	29,170	13,551
Total	$ 33,111	$ 20,425