Leases - Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Lessee, Lease, Description [Line Items]
Sublease Income	$ 8,327	$ 1,146
Charter hire expenses
Lessee, Lease, Description [Line Items]
Short-term lease, cost	17,139	5,487
Operating lease, expense	5,572	2,993
Total charter hire expenses	22,711	8,480
General and administrative expenses
Lessee, Lease, Description [Line Items]
Operating lease, expense	$ 197	$ 184