Leases - Future minimum payments (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Operating lease liabilities
Operating leases - 2024	$ 15,604
Operating leases - 2025	28,445
Operating leases - 2026	20,048
Operating leases - 2027	14,640
Operating leases - 2028	12,181
Operating leases - later years	40,793
Operating leases - Total	131,711
Less: Imputed interest	(16,527)
Operating lease liabilities	115,184	$ 126,946
Finance lease liabilities
Finance leases - 2024	2,262
Finance leases - 2025	4,605
Finance leases - 2026	4,374
Finance leases - 2027	3,017
Finance leases - 2028	2,344
Finance leases - later years	10,433
Finance leases - Total	27,035
Less: imputed interest	(3,031)
Finance lease liabilities	$ 24,004	$ 25,778