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Transactions with Related Parties, textual 3 (Details) $ / shares in Units, $ in Thousands |  | 6 Months Ended |
--- | --- | --- | ---
Jun. 22, 2021 USD ($) Vote $ / shares shares | Jun. 30, 2021 USD ($) $ / shares shares | Dec. 31, 2020 $ / shares
Related Party Transaction [Line Items] |  |  |
Proceeds from issuance of stock, net of expenses |  | $ 264 |
Aggregate principal amount |  | $ 100,819 |
Preferred Stock |  |  |
Related Party Transaction [Line Items] |  |  |
Nominal value | $ / shares |  | $ 0.01 | $ 0.01
Mrs. Semiramis Paliou |  |  |
Related Party Transaction [Line Items] |  |  |
Percentage of number of votes entitled to vote on any matter, Series D preferred stockholders | 15.00% |  |
Purchase of Bond by executives |  |  |
Related Party Transaction [Line Items] |  |  |
Aggregate principal amount | $ 21,000 |  |
Series D preferred stock |  |  |
Related Party Transaction [Line Items] |  |  |
Stock Issued During Period Shares New Issues | shares |  | 400 |
Series D preferred stock | Preferred Stock |  |  |
Related Party Transaction [Line Items] |  |  |
Stock Issued During Period Shares New Issues | shares | 400 |  |
Nominal value | $ / shares | $ 0.01 |  |
Gross purchase price | $ 360 |  |
Proceeds from issuance of stock, net of expenses | $ 264 |  |
Maximum number of votes eligible | Vote | 100,000 |  |
Series D preferred stock | Mrs. Semiramis Paliou |  |  |
Related Party Transaction [Line Items] |  |  |
Stock Issued During Period Shares New Issues | shares | 400 |  |
Nominal value | $ / shares | $ 0.01 |  |
Percentage of number of votes entitled to vote on any matter total | 36.00% |  |

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