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Capital Stock and Changes in Capital Accounts (Narrative Stocks) (Details) |  |  |  |  |  | 6 Months Ended |  |  |
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Jun. 18, 2026 USD ($) $ / shares | Mar. 18, 2026 USD ($) $ / shares | Jun. 24, 2025 USD ($) $ / shares | Mar. 21, 2025 USD ($) $ / shares | Jan. 07, 2025 USD ($) shares | Jun. 30, 2026 USD ($) shares Item $ / shares | Jun. 30, 2025 USD ($) $ / shares shares | Dec. 31, 2025 USD ($) $ / shares shares | Dec. 02, 2024 $ / shares shares | Dec. 14, 2023 shares
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Cash dividends on preferred stock | $ |  |  |  |  |  | $ 2,884,000 | $ 2,884,000 |  |  |
Payments for repurchase of common stock | $ |  |  |  |  |  | $ 0 | $ 23,048,000 |  |  |
Dividend paid on common stock per share | $ / shares | $ 0.01 | $ 0.01 | $ 0.01 | $ 0.01 |  | $ 0.02 | $ 0.02 |  |  |
Cash dividend | $ | $ 1,244,000 | $ 1,236,000 | $ 1,158,000 | $ 1,158,000 |  | $ 2,480,000 | $ 2,316,000 |  |  |
Issuance of stock | $ |  |  |  |  |  | 2,040,000 | 16,000 |  |  |
Warrant liability | $ |  |  |  |  |  | 0 |  | $ 1,330,000 |  |
Gain on warrants | $ |  |  |  |  |  | 1,086,000 | $ (515,000) |  |  |
Warrant liability, current (Note 10(g)) | $ |  |  |  |  |  | 2,352,000 |  | $ 0 |  |
If All Warrants Are Exercised [Member] |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Issuance of stock | $ |  |  |  |  |  | 85,733,000 |  |  |  |
Proceeds from warrant exercises | $ |  |  |  |  |  | $ 90,452,000 |  |  |  |
Shares to be issued upon the exercise of warrants |  |  |  |  |  | 37,221,648 |  |  |  |
Tender Offer [Member] |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Stock repurchased shares |  |  |  |  | 11,442,645 |  |  |  |  |
Payments for repurchase of common stock | $ |  |  |  |  | $ 23,048,000 |  |  |  |  |
Tender offer, price per share | $ / shares |  |  |  |  |  |  |  |  | $ 2.00 |
Tender offer, share to purchase |  |  |  |  |  |  |  |  | 15,000,000 |
Series D Preferred Stock [Member] | Mrs. Semiramis Paliou |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Cash dividends on preferred stock | $ |  |  |  |  |  | $ 0 |  |  |  |
Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Preferred stock, Shares authorized |  |  |  |  |  | 50,000,000 |  | 50,000,000 |  |
Preferred stock, Par value per share | $ / shares |  |  |  |  |  | $ 0.01 |  | $ 0.01 |  |
Preferred Stock [Member] | Series A Participating Preferred Stock |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Preferred stock, Shares authorized |  |  |  |  |  | 1,000,000 |  | 1,000,000 |  |
Issuance of preferred stock, shares |  |  |  |  |  | 0 |  | 0 |  |
Preferred stock, Shares outstanding |  |  |  |  |  | 0 |  | 0 |  |
Preferred Stock [Member] | Series B Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Preferred stock, Shares authorized |  |  |  |  |  | 5,000,000 |  | 5,000,000 |  |
Preferred stock, Par value per share | $ / shares |  |  |  |  |  | $ 0.01 |  | $ 0.01 |  |
Issuance of preferred stock, shares |  |  |  |  |  | 2,600,000 |  | 2,600,000 |  |
Preferred stock, Shares outstanding |  |  |  |  |  | 2,600,000 |  | 2,600,000 |  |
Shares issued price per share | $ / shares |  |  |  |  |  | $ 25.00 |  | $ 25.00 |  |
Preferred stock liquidation preference per share | $ / shares |  |  |  |  |  | $ 25.00 |  | $ 25.00 |  |
Preferred stock voting rights |  |  |  |  |  | Holders of Series B Preferred Shares have no voting rights other than the ability, subject to certain exceptions, to elect one director if dividends for six quarterly dividend periods (whether or not consecutive) are in arrears and certain other limited protective voting rights. |  |  |  |
Preferred stock dividend rate percentage |  |  |  |  |  | 8.875% |  |  |  |
Preferred stock dividend rate per dollar amount | $ / shares |  |  |  |  |  | $ 2.21875 |  |  |  |
Preferred stock, Redemption price per share | $ / shares |  |  |  |  |  | $ 25.00 |  |  |  |
Preferred Stock [Member] | Series C Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Preferred stock, Shares authorized |  |  |  |  |  | 10,675 |  | 10,675 |  |
Issuance of preferred stock, shares |  |  |  |  |  | 10,675 |  | 10,675 |  |
Preferred stock, Shares outstanding |  |  |  |  |  | 10,675 |  | 10,675 |  |
Shares issued price per share | $ / shares |  |  |  |  |  | $ 0.01 |  | $ 0.01 |  |
Preferred stock voting rights |  |  |  |  |  | The Series C Preferred Stock votes with the common shares of the Company, and each share entitles the holder thereof to 1,000 votes on all matters submitted to a vote of the shareholders of the Company. |  |  |  |
Preferred stock number of voting rights |  |  |  |  |  | 1,000 |  |  |  |
Preferred Stock [Member] | Series D Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Preferred stock, Shares authorized |  |  |  |  |  | 400 |  | 400 |  |
Preferred Stock [Member] | Series D Preferred Stock [Member] | Mrs. Semiramis Paliou |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Preferred stock, Par value per share | $ / shares |  |  |  |  |  | $ 0.01 |  | $ 0.01 |  |
Issuance of preferred stock, shares |  |  |  |  |  | 400 |  | 400 |  |
Preferred stock, Shares outstanding |  |  |  |  |  | 400 |  | 400 |  |
Preferred stock voting rights |  |  |  |  |  | The Series D Preferred Stock vote with the common shares of the Company, and each share of the Series D Preferred Stock entitles the holder thereof to up to 200,000 votes, |  |  |  |
Preferred stock number of voting rights | Item |  |  |  |  |  | 200,000 |  |  |  |
Percent of total number of votes entitled to vote on any matter put to shareholders |  |  |  |  |  | 36.00% |  |  |  |
Percent of total number of votes entitled to be cast on matters out to shareholders |  |  |  |  |  | 36.00% |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Issuance of new shares |  |  |  |  |  | 876,267 | 12,802 |  |  |
Stock repurchased shares |  |  |  |  |  |  | 11,442,645 |  |  |
Issuance of stock | $ |  |  |  |  |  | $ 9,000 | $ 0 |  |  |
Warrant [Member] |  |  |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Issuance of new shares |  |  |  |  |  | 876,267 | 12,802 |  |  |
Shares issued price per share | $ / shares |  |  |  |  |  | $ 2.33 | $ 1.24 |  |  |
Issuance of stock | $ |  |  |  |  |  | $ 2,040,000 | $ 16,000 |  |  |
Number of warrants exercised |  |  |  |  |  | 521,143 | 7,825 |  |  |
Number of warrants outstanding |  |  |  |  |  |  |  |  |  | 22,613,070
Number of shares permitted to purchase from warrants |  |  |  |  |  | 1.68852 |  |  |  |
Proceeds from warrant exercises | $ |  |  |  |  |  | $ 2,097,000 | $ 69,000 |  |  |
Price per share | $ / shares |  |  |  |  |  | $ 4 |  |  |  |
Warrant liability | $ |  |  |  |  |  |  |  | $ 1,330,000 |  |
Gain on warrants | $ |  |  |  |  |  | $ 1,086,000 | $ (515,000) |  |  |
Warrant liability, current (Note 10(g)) | $ |  |  |  |  |  | $ 2,352,000 |  |  |  |

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