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Subsequent Events (Narrative) (Details) $ / shares in Units, $ in Thousands, € in Millions |  |  |  |  |  |  | 6 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 08, 2023 USD ($) shares | Jul. 17, 2023 USD ($) $ / shares | Jul. 10, 2023 USD ($) shares | Jul. 06, 2023 EUR (€) | Jul. 06, 2023 USD ($) | Mar. 20, 2023 USD ($) $ / shares | Jan. 30, 2023 USD ($) shares | Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Aug. 01, 2023 $ / shares
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Dividend paid on common stock per share | $ / shares |  |  |  |  |  | $ 0.15 |  |  |  |
Purchase price of asset acquired |  |  |  |  |  |  | $ 23,955 |  |  |
Stock Issued During Period Shares Purchase Of Assets | shares |  |  |  |  |  |  | 2,033,613 |  |  |
Issuance of common stock for vessel acquisitions |  |  |  |  |  |  |  | $ 7,733 |  |
Cash dividend |  |  |  |  |  | $ 15,965 |  |  | $ 38,839 |
Subsequent Events. |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Issuance of new shares | shares | 831,672 |  | 965,044 |  |  |  |  |  |  |
Dividends payable amount per share | $ / shares |  |  |  |  |  |  |  |  |  | $ 0.15
Cash dividend | $ 13,041 |  | $ 12,424 |  |  |  |  |  |  |
Subsequent Events. | Plot Of Land [Member] |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Purchase price of asset acquired |  |  |  | € 1.1 | $ 1,208 |  |  |  |  |
Series B Preferred Stock [Member] | Subsequent Events. |  |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Preferred Stock, Dividends per share | $ / shares |  | $ 0.5546875 |  |  |  |  |  |  |  |
Dividends, Preferred Stock |  | $ 1,442 |  |  |  |  |  |  |  |

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