Supplemental Cash and Cash Flow Information - Non-cash Investing and Financing Activities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Supplemental Cash Flow Elements [Abstract]
Accruals and accounts payable for the purchase of vessels and vessel improvements	$ 191	$ 30	$ 73
Accruals and accounts payable for the purchase of scrubbers and ballast water treatment systems	255	388	3,307
Accrued drydocking expenditures	77	0	0
Accruals for dividends payable	371	2,245	491
Fair value of warrants issued as consideration for the purchase of vessels	$ 0	$ 0	$ 10,680