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Investments in Related Parties and Other (OceanPal) (Narrative) (Details) $ / shares in Units, $ in Thousands | 6 Months Ended |  |  |
--- | --- | --- | --- | ---
Jun. 30, 2024 USD ($) Item $ / shares shares | Jun. 30, 2023 USD ($) | Feb. 22, 2024 USD ($) | Jan. 19, 2024 USD ($) | Dec. 31, 2023 USD ($) shares
Related Party Transaction [Line Items] |  |  |  |  |
Issuance of Common Stock | $ 27,792 | $ 7,733 |  |  |
Cash And Cash Equivalents At Carrying Value | 100,541 | 123,117 |  |  | $ 101,592
Vessels | 1,068,364 |  |  |  | $ 1,114,247
Purchase price of vessel |  |  | $ 23,300 | $ 12,990 |
Gain/(loss) from equity method investments | $ (231) | 244 |  |  |
Common stock, shares issued | shares | 125,089,231 |  |  |  | 113,065,725
OceanPal [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Percent of common stock owned | 49.00% |  |  |  |
Common stock, shares issued | shares | 3,649,474 |  |  |  | 3,649,474
OceanPal [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Investments in related party (Note 5(a)) | $ 6,788 |  |  |  | $ 8,138
Unrealized loss on investments | $ 1,351 |  |  |  |
Series B Preferred Stock [Member] | OceanPal [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Number of votes of stockholders | Item | 2,000 |  |  |  |
Maximum percentage of votes as a percentage of total votes | 49.00% |  |  |  |
Maximum total number of votes entitled to vote, including common stock or any other voting security | 34.00% |  |  |  |
Issuance of preferred stock, shares | shares | 500,000 |  |  |  | 500,000
Series C Convertible Preferred Stock [Member] | OceanPal [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Conversion price | $ / shares | $ 6.5 |  |  |  |
Cumulative preferred dividend accruing rate | 8.00% |  |  |  |
Preferred stock liquidation preference per share | $ / shares | $ 1,000 |  |  |  |
Issuance of preferred stock, shares | shares | 207 |  |  |  | 207
Trading days, term in convertible shares agreement | 10 days |  |  |  |
Series C and Series D [Member] | OceanPal [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Dividend income | $ 8 | $ 567 |  |  |
Series B and Series C Preferred Shares [Member] | OceanPal [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Investments in related party (Note 5(a)) | $ 180 |  |  |  | $ 180

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