Property and Equipment - Schedule of Property and equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Less accumulated depreciation	$ (970,433)	$ (922,029)
Property and equipment, net	1,685,705	1,455,683
Vessels [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,500,062	2,225,123
Buoy and Pipeline [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	15,568	17,130
Finance Lease Right-of-Use Assets [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	40,007	40,007
Other Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	17,392	17,469
Assets in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 83,109	$ 77,983