Vessels - Vessel and Vessel Improvements (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Movement in Property, Plant and Equipment [Roll Forward]
Sale of vessel	$ (14,944)	$ (9,159)
Vessels and Vessel Improvements
Movement in Property, Plant and Equipment [Roll Forward]
Vessels and vessel improvements, beginning balance	908,076
Purchase of vessels and vessel improvements	703
Sale of vessel	(5,592)
Scrubbers and BWTS	8,709
Depreciation expense	(35,349)
Vessels and vessel improvements, ending balance	$ 876,547