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Long-term Debt (Narrative III)) (Details) - USD ($) |  |  | 6 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 19, 2023 | Jan. 04, 2017 | Jun. 30, 2026 | Jun. 30, 2025 | Dec. 31, 2025 | Sep. 29, 2025 | Jul. 06, 2023 | Jun. 26, 2023 | Apr. 12, 2023
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Fair value of derivatives (Note 7) |  |  | $ 0 |  | $ 217,000 |  |  |  |
Restricted cash, current |  |  | 51,250,000 | $ 0 | 53,750,000 |  |  |  |
Gain/(loss) from interest rate swap |  |  | 252,000 | (227,000) |  |  |  |  |
Gain/(loss) on derivative instruments |  |  | 201,000 | (227,000) |  |  |  |  |
Debt current liabilities |  |  | 88,670,000 |  | 50,281,000 |  |  |  |
Export-Import Bank of China [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from issuance of secured debt |  | $ 57,240,000 |  |  |  |  |  |  |
Periodic payment, principal |  |  | $ 954,000 |  |  |  |  |  |
Maturity date |  |  | Jan. 04, 2032 |  |  |  |  |  |
DNB Bank ASA [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Periodic payment, principal |  |  | $ 3,846,000 |  |  |  |  |  |
Maturity date |  |  | Dec. 27, 2029 |  |  |  |  |  |
Notional amount, percent of loan |  |  |  |  |  |  | 30.00% |  |
Interest rate swap, fair value |  |  | $ 109,000 |  | 361,000 |  |  |  |
Loan amount |  |  |  |  |  |  |  | $ 100,000,000 |
Gain/(loss) from interest rate swap |  |  | 252,000 | (227,000) |  |  |  |  |
Gain/(loss) on derivative instruments |  |  | 51,000 |  |  |  |  |  |
Debt current liabilities |  |  | 38,462,000 |  |  |  |  |  |
Danish Ship Finance A/S [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from issuance of secured debt | $ 100,000,000 |  |  |  |  |  |  |  |
Periodic payment, principal | 3,301,000 |  | 2,533,000 |  |  |  |  |  |
Balloon installments | $ 33,972,000 |  | $ 14,323,000 |  |  |  |  |  |
Maturity date |  |  | Apr. 18, 2031 |  |  |  |  |  |
Loan amount |  |  |  |  |  |  |  |  | $ 100,000,000
National Bank Of Greece S.A. [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Periodic payment, principal |  |  | $ 1,250,000 |  |  |  |  |  |
Balloon installments |  |  | $ 25,000,000 |  |  |  |  |  |
Maturity date |  |  | Sep. 29, 2031 |  |  |  |  |  |
Loan amount |  |  |  |  |  | $ 55,000,000 |  |  |
Restricted cash, current |  |  | $ 51,250,000 |  | $ 53,750,000 |  |  |  |

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