Fair Value of Financial Instruments - Fair Value of financial instruments (Table) (Details) - USD ($) $ in Thousands |
Dec. 31, 2022 |
Dec. 31, 2021 |
|||||
|---|---|---|---|---|---|---|---|
| Fair Value Of Financial Instruments | |||||||
| Cash and cash equivalents - Book Value | $ 78,541 | $ 53,367 | |||||
| Cash and cash equivalents - Fair Value | 78,541 | 53,367 | |||||
| Restricted cash - Book Value | 310 | 10 | |||||
| Restricted cash - Fair Value | 310 | 10 | |||||
| Senior and ship mortgage notes, net - Book Value | (496,608) | (646,538) | |||||
| Senior and ship mortgage notes, net - Fair Value | (491,976) | (690,400) | |||||
| Long-term debt, including current portion - Book Value | (59,313) | (58,278) | |||||
| Long-term debt, including current portion - Fair Value | [1] | (59,385) | (58,376) | ||||
| Loans payable to affiliate companies, including current portion - Book Value | 0 | (112,634) | |||||
| Loans payable to affiliate companies, including current portion - Fair Value | 0 | (113,509) | |||||
| Convertible debenture payable to affiliate companies - Book Value | (118,833) | 0 | |||||
| Convertible debenture payable to affiliate companies - Fair Value | $ (118,833) | [2] | $ 0 | ||||
| |||||||