Leases - Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 37,340	$ 81,851	$ 37,743
Time charter-in contracts greater than 12 months
Lessee, Lease, Description [Line Items]
Operating lease cost	21,819	28,282	16,548
Short-term lease cost	14,724	52,821	20,553
Sublease income	23,057	32,980	25,372
Office leases
Lessee, Lease, Description [Line Items]
Operating lease, expense	$ 797	$ 748	$ 642