Deferred Drydock Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Changes in Deferred Drydock Costs [Roll Forward]
Beginning Balance	$ 37,093	$ 24,154
Drydocking expenditures	18,422	21,906	$ 14,294
Accrued drydocking expenditures	589	0
Amortization expense	(13,244)	(8,656)	(7,379)
Write-off due to sale of vessels	(11)	(311)
Ending Balance	$ 42,849	$ 37,093	$ 24,154