Leases - Operating Lease Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 34,368	$ 17,017
Lease liabilities - short term	30,742	15,728
Lease liabilities - long term	$ 3,626	$ 1,282
Discount rate	5.90%	1.70%
Minimum
Lessee, Lease, Description [Line Items]
Discount rate		1.33%
Maximum
Lessee, Lease, Description [Line Items]
Discount rate	8.97%
Chartered-in contracts greater than 12 months
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 30,281	$ 15,039
Lease liabilities - short term	29,989	15,039
Lease liabilities - long term	293	0
Office leases
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	4,087	1,978
Lease liabilities - short term	753	689
Lease liabilities - long term	$ 3,333	$ 1,282