Leases - Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Lessee, Lease, Description [Line Items]
Total lease cost	$ 11,943	$ 21,497	$ 24,576	$ 44,405
Cash paid for operating leases with lease terms greater than 12 months			14,607	12,847
Operating lease right-of-use assets obtained in exchange for lease liabilities			9,187	29,942
Chartered In Contracts
Lessee, Lease, Description [Line Items]
Operating lease cost	6,708	6,866	12,820	12,438
Short-term lease cost	5,019	14,419	11,326	31,558
Sublease income, gross	6,744	8,344	13,160	16,670
Office leases
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 216	$ 212	$ 430	$ 409