Leases - Operating Lease Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 23,006	$ 17,017
Current portion of operating lease liabilities	22,045	15,728
Noncurrent portion of operating lease liabilities	3,173	1,282
Chartered In Contracts
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	19,116	15,039
Current portion of operating lease liabilities	21,328	15,039
Noncurrent portion of operating lease liabilities	$ 0	$ 0
Weighted average remaining lease term (in years)	7 months 6 days	8 months 12 days
Weighted average discount rate	6.00%	1.40%
Office leases
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 3,890	$ 1,978
Current portion of operating lease liabilities	717	689
Noncurrent portion of operating lease liabilities	$ 3,173	$ 1,282
Weighted average remaining lease term (in years)	4 years 8 months 12 days	4 years
Weighted average discount rate	6.90%	4.10%